Question

1. A ball is moving up an inclined plane when its velocity changes from 15m/s to 7m/s in 3 sec. what is its acceleration? a. -5m/s2 b. 2m/s2 c. -2.6m/s2 d. -0.26m/s2

Answer 1

Initial velocity of object (u) = 15m/s

Final velocity of object (v) = 10 m/s

Time taken (t) = 2 seconds

As, we know formula for acceleration is -

(v-u)/t

So, Acceleration = (10-15)/2

= -5/2

= -2.5 m/s²

Answer) Acceleration of body is -2.5 m/s²