[Answered] A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope,

A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its velocity is 4 m/s but 3 seconds later, at the bottom of the slope, its speed is 22 m/s.

What is the average acceleration? Final velocity= Initial velocity=Time =Acceleration =

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