Question

10. A 100 g steel ball falls from a height of 1.8 m on to a metal plate and rebounds to a height of 1.25 m. Find:
a. the p.e. of the ball before the fall (g = 10 m/s 2 ),
b. its k.e. as it hits the plate, c
c. its velocity on hitting the plate,
d. its k.e. as it leaves the plate on the rebound,
e. its velocity of rebound.

Answer 1

Explanation:

10. A 100 g steel ball falls from a height of 1.8 m on to a metal plate and rebounds to a height of 1.25 m. Find:

a. the p.e. of the ball before the fall (g = 10 m/s 2 ),

b. its k.e. as it hits the plate, c

c. its velocity on hitting the plate,

d. its k.e. as it leaves the plate on the rebound,

e. its velocity of rebound.