• A
• B
• C

• 0.959 s
• 4.79 s
• 0.979 s

• 4.20 m
• 52.5 m
• 105 m
• 158 m

• m/s
• m
• m/s2
• s

• 24 m/s2
• 18 m/s2
• 16 m/s2
• 16 m/s

• Km
• s
• m/s
• m/s2

• foot (ft)
• inch (in)
• mile (mi)
• meter (m)

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s
• #### 9.  What happens to the velocity of a ball as it is dropped off a cliff?

• It decreases at a uniform rate
• It increases at a uniform rate
• It is constant
• It increases at a non-uniform rate
• #### 10.  The speedometer on your car tells you

• average velocity
• instantaneous velocity
• average speed
• instantaneous speed

• 19.6 m/s
• -5.4 m/s
• -44.6 m/s
• 44.6 m/s
• #### 12.  A change in velocity over time is known as:

• acceleration
• constant speed
• average speed
• displacement

• 525 m
• 3750 m
• 6235 m
• 9813 m
• #### 14.  The unit we use to measure acceleration is ___.

• meters / second
• meters
• seconds
• meters / second / second

• 1.3 m/s2
• 2.5 m/s2
• 3.0 m/s2
• 7.5 m/s2

• 19 m/s
• 5 m/s
• 22 m/s
• 21 m/s
• #### 17.  How can you change the acceleration of an object?

• Speed the object up
• Keep the object at a constant speed
• Slow the object down
• Change the object's direction
• #### 18.  What does a horizontal line on a distance vs time graph tell us about the motion of the object?

• Slowing down
• Speeding up
• Standing still
• In free fall

• -170 m
• +76 m
• +170 m
• -76 m
• #### 20.  Alexis is riding her bike around town. She travels 43.2 m to the right, and then turns around to bike an additional 30 m to the left. Determine the velocity of Alexis's bike ride if it takes her 39.4 seconds to complete her motion.

• 2 m/s to the right
• 2 m/s to the left
• 0.3 m/s to the right
• 0.3 m/s to the left

• +12 m/s2
• -7.4 m/s2
• -12 m/s2
• +7.4 m/s2
• #### 22.  What does a horizontal line on a velocity vs time graph tell us about the motion of an object?

• Constant speed
• Standing still
• Slowing down
• Speeding up

• 0.060 m/s
• 17 m/s
• 44 m/s
• -17 m/s

• 50 m/s
• 150 m/s
• 285 m/s
• 170 m/s

• 4.9 m/s
• 2.0 m/s
• 7.3 m/s
• 0.13 m/s

• 217 m
• 180 m
• 110 m
• 7.9 m
• #### 27.  Imagine Mr. Gomez spinning a yo-yo in a circular motion with a constant speed. Would the yo-yo have an acceleration during its motion?

• Yes; the displacement is changing, resulting in a changing acceleration
• No; objects at a constant speed always have zero acceleration
• No; acceleration does not apply to centripetal (circular) motion
• Yes; the direction is constantly changing, which changes the acceleration
• #### 28.  What does a constant velocity do tour our acceleration?

• Acceleration increases
• Acceleration decreases
• Acceleration is zero
• Acceleration is not affected by velocity

• 2.2 m/s
• 0.45 m/s
• 6.1 m/s
• 3.6 m/s
• #### 30.  What are our units for acceleration?

• m
• m/s2 or meters/second/second
• N
• m/s or meters/second
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