Physics of Everyday Phenomena
9th Edition
ISBN: 9781260048469
Author: Griffith
Publisher: MCG
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Chapter 7, Problem 19E
Refer to example box 7.2 and figures 7.17 and 7.18. Assume you have a fullback with a mass of 100 kg and an initial velocity of 5.0 m/s, heading due east. A defensive back has a mass of 75 kg and an initial momentum of 4.0 m/s, heading due north. They collide and stick together, with a final momentum of 583 kg m/s, as shown in figure 7.18.
- a. What is the final speed, after the collision, of the two football players?
- b. How does this compare to the final speed for the head-on collision computed in example box 7.2?
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Please help with calculating the impusle, thanks!
Having calculated the impact and rebound velocities of the ping pong ball and the tennis ball calculate the rebounding impulse:
1.Measure the weight of the balls and determine their mass.
Tennis ball: 0.57 kg Ping Pong Ball: 0.00246 kg
The impulse, I, is equal to the change in momentum, Pf-Pi. Note the sign change, i.e., going down is negative and up is positive. The unit for momentum is kg-m/s. The change is momentum, impulse, is often givens the equivalent unit of N-S, Newton-Second
Chapter 7 Solutions
Physics of Everyday Phenomena
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