Momentum isO mass times velocityO none of the given answers is correctO mass times velocity squaredO velocity divided by massO mass divided by velocity A puck, moving at 20 m/s East, deflects off the goalie so that it then moves at 15 m/s North. What is themagnitude of the change of momentum of the puck caused by the deflection? (in units of kg ·O 1000O 5O 2O 10O none of the given answers is correct

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Description: Momentum isO mass times velocityO none of the given answers is correctO mass times velocity squaredO velocity divided by massO mass divided by velocity A puck, moving at 20 m/s East, deflects off the goalie so that it then moves at 15 m/s North. Wha

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Physics

Momentum is mass times velocity O none of the given answers is correct O mass times velocity squared O velocity divided by mass O mass divided by velocity

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Momentum And Collisions

Section: Chapter Questions

Problem 5OQ: A 5-kg cart moving to the right with a speed of 6 m/s collides with a concrete wall and rebounds...

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In research in cardiology and exercise physiology, it is often important to know the mass of blood pumped by a persons heart in one stroke. This information can be obtained by means of a ballistocardiograph. The instrument works as follows. The subject lies on a horizontal pallet floating on a film of air. Friction on the pallet is negligible. Initially, the momentum of the system is zero. When the heart beats, it expels a mass m of blood into the aorta with speed , and the body and platform move in the opposite direction with speed V The blood velocity can be determined independently (e.g., by observing the Doppler shift of ultrasound). Assume that it is 50.0 cm/s in one typical trial. The mass of the subject plus the pallet is 54.0 kg. The pallet moves 6.00 10-5 m in 0.160 s after one heartbeat. Calculate the mass of blood that leaves the heart. Assume that the mass of blood is negligible compared with the total mass of the person. (This simplified example illustrates the principle of ballistocardiography, but in practice a more sophisticated model of heart function is used.)