What is the speed of the ball when it is halfway down the ramp?

Question

The ball rolls from rest down a smooth ramp 8m long. the acceleration of the ball is constant at 2m/s^-2.

Answer 1

Hello,

If you are familiar with the formula:

V_f² = Vi² + 2aΔx

you should be able to solve this by rearranging. We have a (constant acceleration), Δx (4m: halfway down ramp), and Vi (0 m/s: from rest). To find Vf: take the square root of both sides after plugging everything in.