Two problems on Newton's laws and rolling of a ball.
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1. Sam throws a 0.15 kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 3.5 m/s. If the ball is in contact with the floor for 0.025 sec, what is the magnitude of the average force applied by the floor on the ball?
2. A bowling ball has a mass of 7.0 kg, a moment of inertia of 2.8 x 10^-2 kg.m^2 and a radius of 0.10 m. If it rolls down the lane without slipping at a linear speed of 4.0 m/s, what is its angular speed?
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Solution Summary
The expert calculates the average force on a ball by floor on impact. The angular velocity of a rolling ball is calculated.
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1. Sam throws a 0.15 kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 3.5 m/s. If the ball is in contact with the floor for 0.025 sec, what is the magnitude of the average force applied by the floor on the ball?
According to Newton's second law of ...
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