A ball is rolled at a velocity of 25 m/sec. after 13.5 seconds, it comes to a stop. What is the acceleration of the ball?

The answer to your question is a = - 1.85 m/s² the acceleration is negative because it is coming to stop.

Explanation:

Data

vo = 25 m/s

t = 13.5 s

a=?

vf = 0 m/s

Formula

vf = vo + at

solve for a

a = (vf - vo) / t

Substitution

a = (0 - 25) / 13.5

Simplification

a = - 25/13.5

Result

a = - 1.85 m/s²