8.5 • In a game of American football, one 110 kg lineman is runningto the right at 2.65 m/s while another 125 kg lineman is running directlytoward him at 2.80 m/s. What are (a) the magnitude and direction of thenet momentum of these two athletes, and (b) their total kinetic energy?8.32 • Two skaters collide and grab on to each other on frictionless ice.One of them, of mass 66.0 kg, is moving to the right at 2.00 m/s, while theother, of mass 65.0 kg, is moving to the left at 2.80 m/s. What are the mag-nitude and direction of the velocity of these skaters just after they collide?8.43 •• A Ballistic Pendulum. A 12.0 g rifle bullet is fired with aspeed of 380 m/s into a ballistic pendulum with mass 9.00 kg, suspendedfrom a cord 70.0 cm long (see Example 8.8 in Section 8.3). Compute(a) the vertical height through which the pendulum rises, (b) the initialkinetic energy of the bullet, and (c) the kinetic energy of the bullet andpendulum immediately after the bullet becomes embedded in the wood.

****Since the given questions are not related to each other, so only the first question can be…

8.5 • In a game of American football, one 110 kg lineman is running to the right at 2.65 m/s while another 125 kg lineman is running directly toward him at 2.80 m/s. What are (a) the magnitude and direction of the net momentum of these two athletes, and (b) their total kinetic energy?

8.5 • In a game of American football, one 110 kg lineman is running to the right at 2.65 m/s while another 125 kg lineman is running directly toward him at 2.80 m/s. What are (a) the magnitude and direction of the net momentum of these two athletes, and (b) their total kinetic energy?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum, Impulse, And Collisions

Section: Chapter Questions

Problem 79AP: A boy of mass mb and his girlfriend of mass mg, both wearing ice skates, face each other at rest...

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Check Your Understanding Even if there were some friction on the ice, it is still possible to use conservation of momentum to solve this problem, but you would need to imposed an additional condition on the problem. What is that additional condition?