Johnathon Floyd

Physics

28 June, 03:01

A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a small hill and then coasts back up a higher hill. The second hill is 12 m above the ground. What must the initial velocity of the car be for the car to be going 3 m/s at the top of the second hill?

A. 3.0 m/s

B. 5.0 m/s

C. 9.8 m/s

D. 12 m/s

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