• #### 1.  Speed is a __________ quantity and velocity is a __________ quantity.

• scalar, vector
• vector, scalar
• #### 2.  A quantity that is ignorant of direction is referred to as a

• vector quantity
• scalar quantity
• #### 3.  An object is NOT accelerating if it is moving

• in a circle
• at constant velocity
• at increasing speed
• only as influenced by gravity
• #### 4.  A quantity that is has magnitude and direction is referred to as a

• vector quantity
• scalar quantity
• #### 5.  A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is

• 6 m/s/s opposite the motion
• 2m/s/s in the direction of motion
• 8 m/s/s opposite the motion

• 225 m/s
• 25 m/s
• 0.04 m/s

• True
• False
• #### 8.  A _________ quantity is completely described by magnitude alone. A _________ quantity iscompletely described by a magnitude with a direction.

• vector, scalar
• scalar, vector

• 19 m/s
• 5 m/s
• 22 m/s
• 21 m/s
• #### 10.  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
• #### 11.  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
• #### 13.  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
• #### 15.  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
• #### 20.  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
• #### 21.  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
• #### 23.  What are our units for acceleration?

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