A ball is thrown upwards from the edge of a cliff with velocity

PHYSICS · Multi-part · CBSE · Physics · Gravitation · Gravitation

Problem

20.0 \text{ m s}^{-1}

. It reaches the bottom of the cliff

6.0 \text{ s}

later. Take

g = 10 \text{ m s}^{-2}

. (a) Determine the height of the cliff. (b) Calculate the speed of the ball as it hits the ground.