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20 questions
Speed equals distance divided by
time
velocity
size
A ball rolls .144 m in 12 sec. What is its speed in meters per second?
12 cm/sec
12 m/s
1.2 m/s
0.12 m/s
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?
24 m/s3
18 m/s2
16 m/s2
16 m/s
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