Question

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

Answer 1

a = change in velocity/change in time.

so, a = 22-4 / 3 = 6m/s^2