A rolling ball has an initial velocity of 5 meters per second. 30 seconds later, its velocity is 2 meters per second. What is the acceleration of the ball?

Acceleration is defined as the velocity of an object over a period of time.

Mathematically,

Acceleration, A = Velocity [V] / Time [T]

From the question given above, we are told that

T = 30 seconds

Initial velocity, V1 = 5

Final velocity, V2 = 2

Change in velocity, V = V1 - V2 = 5 - 2 = 3

A = V / T = 3 / 30 = 0.1

Therefore A = 0.1 m/s^2.