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A 40-g ball is initially at rest at position A and then drop onto a horizontal...

A 40-g ball is initially at rest at position A and then drop onto a horizontal floor. Just before impact with the floor( position B), the ball has a speed of 5.5m/s. It remains in contact with the floor for 0.15s before bouncing off. Its speed just after losing contact with the floor is 3.0m/s. Neglect air resistance. For the duration that the ball is in contact with the floor, determine

(a) the displacement of the ball from position A

(b)the average force, in addition to the weight of the ball, that the floor exerts on the ball

(c) loss in kinetic energy

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