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Acceleration quiz
Biker crash video
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A red asterisk (*) indicates required questions.
The biker in this video is accelerating because...
*
a) his velocity is increasing as he rides down the hill
b) his velocity decreases as soon as he falls off the bike
c) his velocity does not change during the video
d) a and b
Which of the following explains why a steepher hill would cause acceleration with a LARGER magnitude
*
a) It would increase the final velocity of the biker
b) It would decrease the final velocity of the biker
c) It would decrease the time during which the biker is moving
d) a and c
Which of the following explains why the biker's body experienced acceleration with a LARGE magnitude at the ened of the video (when he falls off the bike)
*
a) He had a large change in velocity over a small period of time
b) He had a large change in velocity over a large period of time
c) He had a small change in velocity over a large period of time
d) He had a small change in velocity over a small period of time
Which of the following explains why gradually pushing the brakes would cause acceleration with a SMALLER magnitude than crashing into the ground?
*
a) crashing into the ground takes more time than gradually pushing the brakes
b) crashing into the ground takes less time than gradually pushing the brakes
c) crashing into the ground causes a larger decrease in velocity than pushing the brakes.
d) b and c
Ms. Fox-Thomas
Education and Engagement Director, S.O.M.E.
Washington, DC
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