Aball rolls downhill with a constant acceleration of 4m/s squared. if it started from rest, it’s velocity at the end of 3 meters is?

4.9 m/s

Explanation:

Since the motion of the ball is a uniformly accelerated motion (constant acceleration), we can solve the problem by using the following suvat equation:

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance covered

For the ball in this problem,

u = 0 (it starts from rest)

is the acceleration

s = 3 m is the distance covered

Solving for v,