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23 Nov 2019
A 2kg ball is thrown downward at 20 m/s and travels 10m beforestriking the ground and bouncing upward with 80% of it's speed atimpact. The collision lasts 0.5s. Assume the force of airresistance is a constant 5N and acts against the motion of the ballat all times.
1. determine the ball's speed at impact.
2. determine the average force the fround exerts on the ball.
3 how much net work is done on the ball before it momentarily comesto rest at the top of its bounce?
4.how much work does gravity do on the ball before it mementarilycomes to rest at the top of its bounce?
5/ how much work does air resistance do on the ball before itmomentarily comes to rest at the top of its bounce?
A 2kg ball is thrown downward at 20 m/s and travels 10m beforestriking the ground and bouncing upward with 80% of it's speed atimpact. The collision lasts 0.5s. Assume the force of airresistance is a constant 5N and acts against the motion of the ballat all times.
1. determine the ball's speed at impact.
2. determine the average force the fround exerts on the ball.
3 how much net work is done on the ball before it momentarily comesto rest at the top of its bounce?
4.how much work does gravity do on the ball before it mementarilycomes to rest at the top of its bounce?
5/ how much work does air resistance do on the ball before itmomentarily comes to rest at the top of its bounce?
