Question

a ball is released from the top of a tower. the ratio of work done by force of gravity in first,second and third second of the motion of the ball is,
a) 1:2:3 b) 1:4:9 c) 1:3:5 d) 1:5:3

Answer 1

Galileo's ratio gives the direct answer. It states that if a body starts from rest and moves with a constant acceleration, then the distance traveled by it in the consecutive equal intervals of time is always in consecutive odd ratios. Thus answer should be c)1:3:5