Question

A ball is dropped from a building of height 400 m . After how much time it will hit the floor?
(take vale of g=10m/^2)​

Answer 1

Answer:

A ball dropped from the roof of height 400m Let after t time it meets with another ball . another ball is thrown from the surface of tower with speed 50m/sec . hence, body collide in 8sec. e.g collision occurs 80m height from the surface of tower