55(c) What is their velocity v, just after impact if they cling together?Vf=In the next three parts, (d) through (f), justify that friction could be ignored compared to theforces of collision by considering the change in momentum of the first player. Let's assume thatthe collision lasts for 10ms. Calculate the force on the first player by the second player duringthe collision. (Hint: Consider the system consisting of the first player only. Consider impulse andthe force from friction.)(d) Calculate the magnitude of the force resulting from the change in the player's velocity duringthe collision:Feff(e) Calculate the force due to the weight of the player. The forces of friction are usually given byFk=UKN=Umg are a fraction of the weight (ie. proportional to the weight). Make theapproximation that the frictional force is equal to the player's weight.mg =N(f) Compare the two forces (in this part, use mg to approximate FK):FeffmgFrom (f) were we justified to ignore friction?Ei1616 106&4-7hpN*8fg9f10Cf112U53°F112+=insert}12:010/2D← b 1. Two football players collide head-on in midair while trying to catch a thrown football and clingtogether. The first player is 89 kg and has an initial velocity of 4 m/s, while the second player is 107kg and has an initial velocity of -7 m/s.Ignore air resistance and friction.O15%5inT(a) For the system consisting of the two football players, the total momentum is:O ConservedO Not conserved(b) This collision is:^question(s):O ElasticO Completely inelastic406Y&7hpU*+8I9f10►IIOOf11YP53°F112+{C(4)+=[insert

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1. Two football players collide head-on in midair while trying to catch a thrown football and cling together. The first player is 89 kg and has an initial velocity of 4 m/s, while the second player is 107 kg and has an initial velocity of -7 m/s. Ignore air resistance and friction. (a) For the system consisting of the two football players, the total momentum is: O Conserved O Not conserved (b) This collision is: O Elastic O Completely inelastic

1. Two football players collide head-on in midair while trying to catch a thrown football and cling together. The first player is 89 kg and has an initial velocity of 4 m/s, while the second player is 107 kg and has an initial velocity of -7 m/s. Ignore air resistance and friction. (a) For the system consisting of the two football players, the total momentum is: O Conserved O Not conserved (b) This collision is: O Elastic O Completely inelastic

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum And Collisions

Section: Chapter Questions

Problem 14P: A 65.0-kg basketball player jumps vertically and leaves the floor with a velocity of 1.80 m/s...

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