Question

A 100g steel ball falls from a height of 1.8m onto a metal plate and rebounds to a height of 1.25m.

A. potential energy before the fall?
B. kinetic energy of the ball as it hits the plate?

Answer 1

Answer: A - 1.8J B - 1.764J

Step-by-step explanation:

2A - M X G X H (P.E = MGH)

100 X 9.8 X 1.8

= 1.8 J

2B - DEC IN P.E = INC IN K.E

SO,P.E = 1.764 = K.E = 1.764 J