H2P-116
Newton’s second law
H2 Physics · JC 1 · Hard · Newton’s second law
A 0.50 kg ball is dropped vertically and hits the ground at 6.0 m s⁻¹. It rebounds vertically at 4.0 m s⁻¹. The contact time with the ground is 0.020 s. What is the average force exerted by the ground on the ball?
- 250 N upwards
- 250 N downwards
- 125 N upwards
- 500 N upwards
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