A ball starting from rest at the top of an inclined plane gains a speed of 2 m/s for each second it rolls. What is its acceleration down the incline? A)0.5 m/s² B)1 m/s² C)2 m/s² D)4 m/s²

Question

Quizplus · Accepted Answer

The acceleration of the ball down the incline can be calculated using the formula: 
acceleration = change in velocity / time taken
Here, the ball gains a speed of 2 m/s for each second it rolls. So, after 1 second, the ball's velocity would be 2 m/s, after 2 seconds, it would be 4 m/s, and so on. 
Therefore, the change in velocity after 1 second is 2 m/s (i.e., from 0 m/s to 2 m/s) and the time taken is 1 second. 
Acceleration = 2 m/s / 1 s = 2 m/s²
Hence, the acceleration down the incline is 2 m/s², which is given in option C.

A Ball Starting from Rest at the Top of an Inclined