Question

A ball starts from rest and rolls down an inclined plane in 4 secs. What is its acceleration and velocity at the bottom of the incline.

Answer 1

Hi. ..

a)The ball rolls down the incline plane due to the gravitation force acting upon it.

Hence, acceleration of the ball = 9.8m/s² ----- (1)

b) Now the velocity of the ball at the bottom of the incline,
⇒ v² = u² + 2as
⇒ v² = 0 + 2(9.8)16
⇒ v² = 313.6
⇒ v = 17.7087 m/s..

Hope this helps u!!