Consider a ball that picks up a speed of 3 m/s each second when its rolls from rest down an inclined plane. If the ball takes 4 seconds to reach the bottom, its speed at the bottom will be?

Answer 1

The acceleration rate is a = 3.0 m/s^2

After 4 seconds, its speed is a*4 = 12 m/s, if it started from reat.