Question

A ball is dropped from the top of a 100 m high tower on a planet. In the last (1/2)s before hitting the ground, it covers a distance of 19 m. Acceleration due to gravity (in ms^–2) near the surface on that planet is _____

Answer 1

Time to travel 81 m is t sec.

Time to travel 100 m is t + (1/2) sec.

a = 8 m/s²

Answer 2

Area of shaded trapezium

g = 8 m/s²