Calculating the acceleration of a rolling ball

23 Jun 2021

What is the acceleration of the ball as it rolls across the grass?

Given:

Initial velocity (v₀) = 20 mi/hr = 8.94 m/s

Final velocity (v) = 0 m/s

Time (t) = 4.0 s

Find: Acceleration (a)

Using the kinematic equation:

v = v₀ + at

0 m/s = 8.94 m/s + a (4.0 s)

a = -2.24 m/s²

Therefore, the acceleration of the ball as it rolls across the grass is -2.24 m/s².