A non-example of distance is "a car that weighs 10 kg travels at a speed of 5 km/hr."
What is distance?In Mathematics and Science, distance can be defined as the amount of ground that is travelled by a physical object or body over a particular period of time and speed, irrespective of its direction, starting point or ending point.
Mathematically, the distance traveled by a car when it is positioned between two end points can be calculated by using this equation:
Total distance = 20 km + 10 km
Total distance = 30 km
In conclusion, since I didn't mention the time taken in the sentence above, it is a non-example of distance.
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Complete Question:
What is a non-example of distance?
a ball is thrown vertically upward with a speed of 19 m/s from a height of 7 m. how high does the ball rise from original position?
The ball rise 18.42 m from its original position.
What is Height?Height is the vertical distance between two points.
To calculate the height of the ball, from the original position, we use the formula below.
Formula:
v² = u²+2gh.......... Equation 1Make h the subject of the equation
h = (v²-u²)/2g...........Equation 2Where:
v = Final speedu = Initial speedg = Acceleration due to gravityh = Height of the ball from the original positionFrom the question,
v = 0 m/su = 19 m/sg = -9.8 m/s²Substitute these values into equation 2
h = (0-19²)/(2)×(-9.8)h = -361/-19.6h = 18.42 mHence, the ball rise 18.42 m from its original position.
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A person swims at a constant speed of 1 meter per second. What type of function can be used to model the distance the swimmer travels?
Hint: sketch a graph of what this would like and see which parent function it looks like
If a person swims at a constant speed of 1 meter per second, than the linear function will be used to model the distance travelled by the swimmer.
The parent function is "the principal's of ice"
A linear function is a function that forms a straight line on a graph. It is generally a polynomial function whose degree is at most 1 or 0. Although linear functions are also represented in terms of calculus and linear algebra.
Here Y-axis represents Distance and X-axis represents Time.
Also speed is the rate of change of distance with respect to time i.e. distance is changing linearly with time
Mathematically it is [tex]Speed = \frac{distance}{time}[/tex].
Change in Distance = Change in time and hence speed is constant.
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A light-year (ly) is the distance light travels in one year (at speed of 2.998 × 10^8 m/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 × 10^8 km. 1 year = 3.156 × 10^7 s.
A. How many meters are there in 1.50 ly ?
B. How many AU are there in 1.50 ly light-year?
There are few points given to us in this question.
The speed of lightTime (in seconds) in a yearDistance between Earth and SunSpeed of light in m/sA) There are 1.41× 10^16 m in 1.5 light years
B) There are 9.4 × 10^4 AU in 1.5 light years
What is a light year?
Many might confuse it with time because of the presence of term “year” this term is actually used for space objects to measure distance. Light Year is the distance travelled by light in one Earth year.
It’s a term named by German scientist Friedrich Bessel who first used it in 1838.
One light year is about 6 trillion miles or 9.46 trillion kilometers.
To solve part A, we will first multiply V(light) with time (in seconds) in a year and multiply the product with 1.5 light year per light year.
Now let us understand what is Astronomical Unit AU?
AU is also used to measure distance but within our solar system. It is usually the average distance between Sun and Earth. It is about 93 million miles or 150 million kilometers.
To solve part B, we first convert the light year to AU and we do this by using the final value from part A and then convert it in significant figure to obtain a proper value for the answer.
The calculations are shown in the figures below.
Hence,
A) There are 1.41× 10^16 m in 1.5 light years
B) There are 9.4 × 10^4 AU in 1.5 light years
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Metric Conversions:
1) 5KL = ?L
2) 3L = ?KL
3) 4g = ?Kg
4) 81Kg = ?g
5) 52dg = ?g
6) 3dm = ?m
7) 14mm = ?m
The metric conversion of the given quantities is determined as
5 KL = 5,000 L3L = 0.003 KL4g = 0.004 kg81 kg = 81,000 g52 dg = 5.2 g3 dm = 0.3 m14 mm = 0.014 mWhat is metric conversion?Metric Conversion refers to the conversion of the given units to desired units for any quantity to be measured.
The metric conversion of the following quantities is calculated as follows;
5 KL = 5 x 1000 L = 5,000 L
3L = 3 x 1/1000 L = 0.003 KL
4g = 4 x 1/1000 g = 0.004 kg
81 kg = 81 x 1000 g = 81,000 g
52 dg = 52 x 1/10 g = 5.2 g
3 dm = 3 x /10 m = 0.3 m
14 mm = 14 x 1/1000 m = 0.014 m
Thus, the metric conversion of the given quantities is determined as
5 KL = 5,000 L3L = 0.003 KL4g = 0.004 kg81 kg = 81,000 g52 dg = 5.2 g3 dm = 0.3 m14 mm = 0.014 mLearn more about metric conversion here: https://brainly.com/question/26259781
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An auto's velocity increases uniformly from 6.0 m/s to 20 m/s while covering 70 m in a straight line. Find the acceleration and the time taken.
An auto's velocity increases uniformly from 6.0 m/s to 20 m/s while covering 70 m in a straight line, its acceleration is 2.6 [tex]m/s^2\\[/tex] and the time taken is 5.4 s.
AccelerationThe probable rate at which an object’s velocity changes with respect to time is referred to as its acceleration in mechanics. They are vector quantities and accelerations.
The direction of the net force acting on an object determines the direction of its acceleration.
Measurement scaleThe meter per second ([tex]m/s^2\\[/tex]) unit of acceleration is used to measure speed. The square meter is a measure of area ([tex]m^2[/tex])
The auto's velocity increases uniformly from 6m/s to 20m/s while it is covering the total of 70m.
Since it increases uniformly, thus we can use equation of motion
[tex]V^2 - U^2 =2as[/tex]
U = 6m/s
V = 20m/s
s = 70 m
Thus,
[tex](20)^2 - (6)^2 = 2*a*70[/tex]
a = 2.6 [tex]m/s^2\\[/tex]
Then for the time, we have
a = [tex]\frac{(V-U)}{t}[/tex]
2.6 = [tex]\frac{20 - 6}{t}[/tex]
t = 5.4 s
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If you are given values for Δx, v, and Δt, which kinematic equation could be used to find v0?
V = v0 + aΔt
Δx= (v + v0/ 2) Δt
v^2 = v0^2 2aΔx
Δx = v0Δt + 1/2 a (Δt)^2
The kinematic equation which could be used to find v₀ is Δx= (v + v₀/ 2) Δt; option B.
What are kinematic equations?Kinematic equations are equations which relates the motion of a body.
Kinematic equations shows the relationship between the various parameters of motion of a body:
change in position, Δxchange in time, Δtacceleration. ainitial velocity, v₀final velocity, vThe kinematic equations are given below:
V = v + a*ΔtΔx= (v + v₀/ 2) Δtv^2 = v₀² + 2aΔxΔx = v₀Δt + 1/2 a * (Δt)²Given the values for Δx, v, and Δt, the kinematic equation which could be used to find v₀ is Δx= (v + v₀/ 2) Δt
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What’s more dense, a 200g bar of Aluminum or a 2g cube of Aluminum?
Answer:
2g cube of Aluminum
Explanation:
An object originally moving at a speed of 20.0
meters per second accelerates uniformly for 5.0 seconds to a final speed of 50.0 meters per second. What is the acceleration of the object?
Answer:
6.0 m/s^2 There are 2 places of accuracy. (5.0 has only two places)
Explanation:
Formula
This uses the formula
a = (vf - vi)/t where
a is the accelerationvf is the final speedvi is the starting speed.t is the time takenSolution
Substitute the givens into the formula
a = (50m/s - 20 m/s)/5
a = 30/5
a = 6 m/s^2
A runner can maintain a constant acceleration of 1.1m/s^2 for 8.5 seconds. What distance could the runner cover in that time of starting from rest
The distance covered by the runner after starting from rest is 39.74 m/s².
The real route length of a moving particle or object is referred to as distance. The shortest distance between a body's initial and final positions is referred to as displacement. Speed is the amount of distance a particle travels in one unit of time.
The constant acceleration of a runner is 1.1 m/s².
The runner maintains the constant acceleration for 8.5 seconds.
So,
a = 1.1 m/s²
t = 8.4 seconds
Since the runner starts from the rest.
Therefore, the initial velocity u = 0 m/s
Using the equation of motion,
s = ut + (1/2) × a × t²
s = 0 × 8.5 + ( 1/2 ) × 1.1 × 8.5 × 8.5
s = ( 1/2 ) × 79.475
s = 39.737 m/s²
s = 39.74 m/s²
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How precise is the measurement of length? Of volume?
Answer:
The precision corresponds to the least count of the measurements, which is 0.1 cm 0.1 c m for the length of the box. In a similar manner, the precision of the volume is 0.01×103 cm3=10 cm3 0.01 × 10 3 c m 3 = 10 c m 3 .
The table shows data for two groups of plants, one grown with fertilizer and the other without fertilizer. Effect of Fertilizer on Plant Growth No fertilizer Fertilizer Height of plants (cm) 24.1 25.9 25.4 24.1 35.6 30.5 32.1 40.6 30.5 33.8 What effect does the value 35.6 have on the measures of central tendency for the data in the left column? . The mean will be lower than the median and mode B. The mean will be higher than the mode but lower than the median. . The mean will be higher than the median and mode. . The mean will be higher than the median but lower than the mode
The value 35.6 have on the measures of central tendency for the data in the left column, as mean will be higher than the median and mode. The correct option is C.
What is mean?The mean is the average of a set of values in mathematics and statistics. There are several ways to compute the mean, including the simple arithmetic mean, the geometric mean, and the harmonic mean.
To find the mean, add all of the numbers together. The total sum is then divided by the number of scores used. The mean or average of the number set in this example is 6.7.
The value 35.6 has a positive effect on the measures of central tendency for the data in the left column, as the mean is greater than the median and mode.
Thus, the correct option is C.
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According to Kepler's laws of planetary motion
the ratio of the mean radius of the orbit of a
planet cubed to the period of revolution of
the planet squared is constant for all planets
orbiting the Sun. Sketch a graph representing
this relationship.
The ratio of the cubes of any two planets' average distances from the sun (r) to their squares representing their periods (T) is equal to one.
What is the Kepler's law?First Law: The sun is at the center of elliptical planetary orbits.
Second Law: Equal areas are covered in equal amounts of time by the radius vector from the sun to a planet.
Third Law: For every planet, the ratio of the cube of the ellipse semimajor axis to the square of the period of revolution is the same.
The third law of Kepler, also referred to as the Law of Harmonies, states that the ratio of any two planets' squared periods to their squared average distances from the sun is equal to one. The third law compares a planet's orbital radius and period to those of other planets.
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With what speed must an object be projected vertically upward for it to reach a maximum height of 12.0 m above its starting point?
The speed that must be attained by the object when its projected upward vertically is 15.34 m/s.
What is speed?Speed is the ratio of the distance covered by a body to the total time.
To calculate the speed the object must attain, we use the formula below.
Formula:
v² = u²+2gh............. Equation 1Where:
v = Final speedu = Initial speedg = Acceleration due to gravityh = HeightFrom the question,
Given:
u = 0 m/sg = 9.8 m/s²h = 12 mSubstitute these values into equation 1
v² = 0²+2×12×9.8v² = 235.2v = √235.2v = 15.34 m/sHence, the speed that must be attained by the object when its projected upward vertically is 15.34 m/s.
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A cyclist coasts down a hill at 10 m/s. What does 10 m/s describe? Question 2 options: acceleration distance speed velocity
Answer:
speed
Explanation:
meters per second
Which of the following scenarios shows an object with a negative velocity and a negative acceleration?
Question 6 options:
A pig moves toward the reference point speeding up.
A pig moves away from the reference point slowing down.
A pig moves toward the reference point slowing down.
A pig moves away from the reference point speeding up.
C. The following scenarios that shows an object with a negative velocity and a negative acceleration is "a pig moves toward the reference point slowing down."
What is negative velocity?A negative velocity occurs when an object moves in the negative direction.
Example of negative velocity;
If a car is moving away from you (reference point) then the velocity is positive. If a car is coming towards you (reference point) then the same vector reverses direction and hence the velocity is negative.What is negative acceleration?If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion. Thus, the acceleration of the object will be negative.
Thus, the following scenarios that shows an object with a negative velocity and a negative acceleration is "a pig moves toward the reference point slowing down."
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What will be the acceleration of an object at rest with 70kg if the force exerted is 1400N?
Force = (mass) x (acceleration)
so
Acceleration = Force / mass
Acceleration = (1400 N) / (70 kg)
Acceleration = 20 m/s²
A construction worker on the 24th floor of a building project accidentally drops a wrench and yells “Look out below” Could a person of ground level hear his warning in time to get out of the way? The speed of sound is about 1100 feet per second
Answer:
Assuming the height at which the wrench was dropped is 336 feet,
the person will hear the sound in 0.3 sec and the wrench will hit the ground only after 4.58 seconds so there is enough time to get out of the way
Explanation:
Without knowing the exact height at which the 24th floor is located, it would be difficult to determine whether the wrench will hit the ground before the sound hits the ground
Realistically, we can assume each floor of the building is 14' high
So the height at which the 24th floor is located is 24 x 14 = 336 feet
To travel 336 feet at 1100 feet per second, sound will take 336/1100 seconds which is 0.30 second
Let's compute the time taken for the wrench to hit the ground
The acceleration due to gravity is usually taken to be 16 feet/second²
The displacement which is the distance traveled by an object with an initial velocity of u in time t is given by the equation:
s = ut + (1/2)t²
Here the initial velocity is 0
So the equation is
s = 1/2 x 32 x t² = 16t²
To cover 336 feet we substitute 336 for s and get
336 = 16t²
t² = 336/16
t = ±√(336/16) ≈ 4.58 seconds (we only take the positive root)
So the person will hear the sound in 0.3 sec and the wrench will hit the ground only after 4.58 seconds so there is enough time to get out of the way
In general, we can state that if the height from which the wrench was dropped is h then time t taken for wrench too hit the ground is
t = √(h/16) seconds
If this is greater than the time taken for sound to travel the same distance then the person can get out of the way
European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/h in 8 seconds. What is the speed after the first 5 seconds of acceleration?
Answer:
[tex]62.5[\frac{km}{h}][/tex]
Explanation:
if the required speed is 's', then it is possible to make up the next equation:
[tex]\frac{100}{8} =\frac{s}{5};[/tex]
finally,
s=100*5/8=62.5 [km/h].
A student drops a ball from a window 5.0 m above the sidewalk. How fast is it moving when it hits the sidewalk?
The ball's velocity is 9.9 m/s fast when it hits the sidewalk.
What is velocity?Velocity is the rate of change of displacement.
To calculate how fast the ball was moving when it hits the sidewalk, we use the formula below.
Fromula:
V² = U²+2gS......... Equation 1Where:
V = Final velocityU = Initial velocityg = Acceleration due to gravityS = DistanceFrom the question,
Given:
U = 0 m/sg = 9.8 m/s²S = 5 mSubstitute these values into equation 1
V² = 0²+2×5×9.8V² = 98V = √98V = 9.9 m/sHence, the ball's velocity is 9.9 m/s fast when it hits the sidewalk.
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The Blue Origin rocket ship starts vertically upward from the launch pad a constant
acceleration of 6.3 m/sec2. How high does the rocket ship raise above the launch
pad after 94 seconds of flight?
Assume that the rocket ship moves vertically up all the time. Enter your answer in
meters (m).
The rocket ship rises to a height of 27.83 km above the launch pad after 94 seconds of flight.
We know that,
s = u t + 1 / 2 a t²
where,
s = Displacement
u = Initial velocity
a = Acceleration
t = Time
Given that,
u = 0
a = 6.3 m / s²
t = 94 s
s = 0 + 1 / 2 ( 6.3 * 94² )
s = 27833.4 m
s = 27.83 km
Displacement the distance between the initial point and final point. It is denoted using s.
Therefore, the rocket ship rises to a height of 27.83 km above the launch pad after 94 seconds of flight.
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What ia the speed of A car travels 100meters in 50 seconds what's it's speed
A 100.0 kg person will need to climb a 10.0 m stairway how many times to "work off" each excess 20 Cal (kcal) consumed?
The person must climb the stairs about eight times.
What is the energy required?We know that energy is the ability to do work. Work and energy are two quantities that are dimensionally similar to each other. In this case, we are trying to obtain the number of times that A 100.0 kg person will need to climb a 10.0 m stairway how many times to "work off" each excess 20 Cal (kcal) consumed.
Now;
Work done by the person = mgh = 100.0 kg * 10 m/s^2 * 10 m = 10000 J
To convert from joules to kcal, we know that;
1 kcal = 4184 J
x = 10000 J
x = 1 kcal * 10000 J/4184 J
x = 2.39 kcal
In order to burn off the excess calories, the person must climb the stairs;
20 kcal/2.39 kcal = 8
The person must climb the stairs about eight times.
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which of the statements is not correct
Answer:
The electrostatic interactive force between electrical charges is exactly the same as the gravitational interaction between them
Explanation:
The magnitude of charge is independent of the weight and displacement of the charge but only sign of the charge is the dependent factor.
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A rectangular pool is 3 feet wide. It is 4 times as long as it is wide. Label the diagram with the dimensions of the pool. Then find the perimeter of the pool.
The perimeter of the pool is measured as 30 feet.
What is the perimeter?We know that a rectangle is a four sided polygon recall that a polygon is any figure that has n sides. The number of sides in a polygon could move from three to infinity. The polygons come in different shapes and are solids with definite values of surface areas and volumes.
The rectangle is four sided which each of the angles of the rectangle adding up to give 360 degrees. It must be noted that the opposite sides of the rectangle are equal to each other.
We have the following information;
Length of the pool = 4(3 feet) = 12 feet
Width of the pool = 3 feet
Since perimeter = 2 ( length + width)
Perimeter = 2( 12 + 3)
Perimeter = 30 feet
Hence, the perimeter of the pool is measured as 30 feet.
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Which characteristic is used to measure of light radiated by sh star
The characteristic that is used to measure light radiated by a star is luminosity. The correct option is C.
What is luminosity?The radiant power emitted by a light-emitting object with respect to time is measured as luminosity, which is an absolute measure of radiated electromagnetic power.
The total amount of electromagnetic energy radiated per unit of time by a star, cosmos, or other celestial object is referred to as luminosity in astronomy.
The amount of light emitted by a star is measured using luminosity. It is the total amount of emery or light emitted by a star per unit of time. Or it is the total energy produced by a star in one second from its surface.
Thus, the correct option is C.
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Your question seems incomplete, the missing options are:
Size
color
luminosity
temperature
Convert 277.01 pm to cm (use scientific notation).
277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres in scientific notation. Details about how to convert picometers to centimetres can be found below.
How to convert picometers to centimetres?Picometers is the SI unit of length that is equal to 10−¹² meters.
On the other hand, centimetres is another S.I unit of length that is equal to 10-² metres.
The conversion factor of picometers to centimetres is as follows:
1 picometre = 1 × 10-¹⁰ centimetres
277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres
Therefore, 277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres in scientific notation.
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An objects
A) weight
B) density
C) mass
D) Any of these.
determines the extent of resistance to a change of motion.
OA
OB
OC
OD
Answer:
B
Explanation:
A skateboarder travels on a horizontal surface with an initial velocity of 3.6 m/s toward the south and a constant acceleration of 2.6 m/s2 toward the east. Let the x direction be eastward and the y direction be northward, and let the skateboarder be at the origin at t=0 .
What is her x position at t=0.80s ?
What is her y position at t=0.80s ?
What is her x velocity component at t=0.80s ?
What is her y velocity component at t=0.80s ?
a. Her x position at t = 0.80 s is 0.0832 m
b. Her y position at t = 0.80 s is -28.8 m
c. Her x velocity component at t = 0.80s is 2.08 m/s
d. her y velocity component at t = 0.80s is -3.6 m/s
Since the skateboarder travels on a horizontal surface with an initial velocity of 3.6 m/s toward the south and a constant acceleration of 2.6 m/s² toward the east.
Her velocity v = (0i - 3.6j) m/s and her acceleration a = (2.6i + 0j) m/s²a. What is her x position at t = 0.80s ?Now since she starts from the origin, to find her x position after 0.80 s, using the equation of motion for the x - components of motion,
x = ut + 1/2at² where
u = x - component of velocity = 0 m/s, a = x - component of acceleration = 2.6 m/s² and t = time = 0.8 sSo, substituting the values of the variables into the equation, we have
x = ut + 1/2at²
x = 0 m/s × 0.8 s + 1/2 × 2.6 m/s² × (0.8 s)²
x = 0 m + 1.3 m/s² × 0.64 s²
x = 0 m + 0.832 m
x = 0.832 m
So, her x position at t = 0.80 s is 0.0832 m
b. What is her y position at t = 0.80s ?Using the equation of motion for her y - components of motion, her y position is y = ut + 1/2at² where
u = y - component of velocity = -3.6 m/s, a = y - component of acceleration = 0 m/s² and t = time = 0.8 sSo, substituting the values of the variables into the equation, we have
y = ut + 1/2at²
y = -3.6 m/s × 0.8 s + 1/2 × 0 m/s² × (0.8 s)²
y = -3.6 m × 0.8 s + 0
y = -28.8 m
So, her y position at t = 0.80 s is -28.8 m
c. What is her x velocity component at t = 0.80s ?Using the equation of motion for her x - component of motion, her x velocity compoent after t = 0.8 s is
v = u + at where
u = initial x - component of velocity = 0 m/s, a = x - component of acceleration = 2.6 m/s² and t = time = 0.8 sSo, we have
v = u + at
v = 0 m/s + 2.6 m/s² × 0.8 s
v = 0 m/s + 2.08 m/s
v = 2.08 m/s
So, her x velocity component at t = 0.80s is 2.08 m/s
d. What is her y velocity component at t = 0.80s ?Using the equation of motion for her y - component of motion, her xyvelocity compoent after t = 0.8 s is
v = u + at where
u = initial y - component of velocity = -3.6 m/s, a = y - component of acceleration = 0 m/s² and t = time = 0.8 sSo, we have
v = u + at
v = -3.6 m/s + 0 m/s² × 0.8 s
v = -3.6 m/s + 0 m/s
v = -3.6 m/s
So, her y velocity component at t = 0.80s is -3.6 m/s
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The law of conservation of mass states that ___________
A.) matter cannot be created or destroyed
B.)mass can be created if a chemical reaction occurs
C.) atoms conserve mass when they fuse to form molecules
The law of conservation of mass states that matter cannot be created or destroyed.
The law of conservation of mass states that the mass of the reactant must be equal to the mass of the product.
In 18th century law of conservation of mass was given by Levoisier.
It states that mass is neither created nor destroyed.
Example -
when wood burns the mass of the suit ,ashes and gases equal to the original mass of the charcoal. after heating the ice it will convert into water. Mass of the ice does not change after undergoes a physical. Change.
The law of conservation of mass states that matter cannot be created or destroyed.
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pls helppp
A model rocket has a mass of 0.2 kg, with a motor that can provide a force of 100 N. A second model rocket is being built with the
same motor, but it is being designed to accelerate half as much as the first rocket. What kind of change can be made in the design to
achieve this objective? (1 point)
O The mass of the second rocket should be 0.1 kg.
The mass of the second rocket should be 0.01 kg.
The mass of the second rocket should be 0.4 kg.
O The mass of the second rocket should be 0.2 kg.
The mass of the second rocket should be 0.4 kg in order for the acceleration to be half of the first rocket's acceleration.
We know that,
F = m a
where,
F = Force
m = Mass
a = Acceleration
Given that,
[tex]F_{1}[/tex] = 100 N
[tex]m_{1}[/tex] = 0.2 kg
[tex]F_{1}[/tex] = [tex]F_{2}[/tex] = 100 N
[tex]a_{2}[/tex] = [tex]a_{1}[/tex] / 2
[tex]F_{1}[/tex] = [tex]m_{1}[/tex] * [tex]a_{1}[/tex]
[tex]a_{1}[/tex] = 100 / 0.2
[tex]a_{1}[/tex] = 500 m / s²
[tex]a_{2}[/tex] = 500 / 2
[tex]a_{2}[/tex] = 250 m / s²
[tex]m_{2}[/tex] = 100 / 250
[tex]m_{2}[/tex] = 0.4 kg
According to Newton's second law of motion, acceleration of an object is the result of force acting on the object.
Therefore, The mass of the second rocket should be 0.4 kg
To know more about Newton's second law
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