Water falls without splashing at a rate of 0.230 L/s from a height of 3.50 m into a 0.760-kg bucket on a scale. If the bucket is originally empty, what does the scale read 2.20 s after water starts to accumulate in it? (Note that you can ignore the initial impulse at t = 0.)

A tennis ball with a mass of 55 grams experiences a contact time with a tennis racket for 29 milliseconds during an executed serve.  The velocity of the tennis ball when it leaves the racket during the serve is 75 m/s. a) What impulse (magnitude only) in Ns did the server exert on the tennis ball in his serve? b) What average force (magnitude only) in Newtons did the server exert on the tennis ball in the serve? c) If the opponent returned the serve with a speed of 53 m/s, what impulse (magnitude only) in Ns did the opponent’s racket exert on the ball during the return shot from the serve? (assume the velocity of the ball when it first hits the racket is the same as the serve velocity mentioned above) d) What average force in Newtons (magnitude only) did the opponent’s racket exert on the ball in the return shot if the ball was in contact with the racket for 28 milliseconds?

Your task is to catch a 2.0 kg water balloon that is moving toward you at a velocity of 35 m/s. You have the options of catching the balloon over a period of 0.5 s or 1.5 s. Which method is the safest (driest) and why? Use the impulse-momentum approach to validate your answer.

47. Ophthalmologists use the properties of inelastic collisions to detect a disease of the eye called glaucoma. While a healthy eye at normal pressure is slightly spongy, glaucoma causes the eye to become rigid due to a buildup of pressure in the eye. An ocular tonometer helps test for glaucoma by sending a puff of air to collide with the eye and measuring its rebound velocity. How would the impulse delivered to the puff of air against a healthy eye compare to an eye with glaucoma?A. The impulse delivered to the air puff by the healthy eye would be greater due to the higher rebound velocity of the air puff. B. The impulse delivered to the air puff by the glaucoma eye would be greater due to the higher rebound velocity of the air puff. C. The impulse delivered to the air puff by the healthy eye would be greater due to the lower rebound velocity of the air puff. D. The impulse delivered to the air puff by the glaucoma eye would be greater due to the lower rebound velocity of the air…