AS Physics - Kinematics

Could use some help on the following question:

A metal ball is dropped from a height onto soft ground. The ball hits the ground and penetrates a distance of 8.5cm. Calculate the deceleration of the ball as it enters the ground. You may assume that the ball decelerates uniformly.

So a = 9.81 ms -2, s = 6.0 m, u = 0

Could use some help on the method to work out the questions.

Thanks

Reply 1

Robob

Use the standard equations of motion to work out the velocity of the ball just before it hits the ground, then use them again to work out the deceleration.