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A roller coaster is moving at 30 m/s at the bottom of a hill. Five seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster

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avoos33

Answer:

Ok

Explanation:

Acceleration = final velocity - initial velocity
                            -----------------------------------
                                    time taken

Initial velocity = 10m/s
Finaly velocity = 30m/s

time taken = 5 secs
Acceleration =  10-30/5
                      = -20/5
                      = -4 m/s^2

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