Kinematics Equations and Free Fall Quiz: Multiple Choice review

Acceleration is best defined as:

• A change in position over time

• A change in velocity over position

• A change in time over a change in position

• A change in velocity over time

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The standard unit of velocity is:

• m (meters)

• m/s (meters per second)

• m/s^2 (meters per second per second or meters per second squared)

• s (seconds)

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The standard unit of acceleration is:

• m (meters)

• m/s (meters per second)

• m/s^2 (meters per second per second or meters per second squared)

• s (seconds)

An acceleration occurs when an object:

• Increases its velocity

• Decreases its velocity

• Changes the direction of its velocity (turns)

• All of the above

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NGSS.MS-PS2-2

Ignoring air resistance, all objects close to the surface of Earth do this if released from a height above the ground:

• Speed up until it reaches a velocity of 10 m/s downward

• Travel at exactly 10 m/s downward

• Accelerate at about 10 m/s^2 downward

• It's impossible to tell

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A ball is thrown up into the air. Which statement below is most correct about the ball on its way to its highest point?

• Its velocity is directed upward and its acceleration is directed upward

• Its velocity is directed downward and its acceleration is directed upward

• Its velocity is directed upward and its acceleration is directed downward

• Its velocity is directed downward and its acceleration is zero

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Which kinematics equation correctly relates final velocity (v), initial velocity (v0), acceleration (a), and time (t) for constant acceleration?

• v = v0 + at

• v = v0 + 2at

• v = at

• v = v0 − at

• 96 m/s

• 108 m/s

• 81 m/s

• 54 m/s

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NGSS.HS-PS2-1

A race car starts from rest and accelerates at a constant rate of 12 m/s² for 9 seconds. What is the displacement of the car during this time?

• • A. 243 m

• • B. 486 m

• • C. 972 m

• 1,458 m

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NGSS.MS-PS2-2

• 16.4 m/s

• 23.4 m/s

• 36.8 m/s

• 9.8 m/s

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NGSS.MS-PS2-4

NGSS.MS-PS3-1

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