Calculating the acceleration of a rolling ball
What is the acceleration of the ball as it rolls across the grass?
Answer: -2.24 m/s²
Explanation:
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.