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Author Question: A 75.0-kg halfback running north with a speed of 11.0 m/s is tackled by a 80.5-kg opponent running ... (Read 63 times)

misspop

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on: Jul 28, 2018
A 75.0-kg halfback running north with a speed of 11.0 m/s is tackled by a 80.5-kg opponent running south at 7.5 m/s. The collision is perfectly inelastic. Compute the velocity of the two players just after the tackle.
 a. 9.2 m/s south
  b. 1.4 m/s south
  c. 1.4 m/s north
  d. 40 m/s north
  e. 9.2 m/s north

Question 2

A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm/s. As a result of the collision, the first ball moves at 50.0 cm/s, and the second ball stops. What is the change in kinetic energy of the system as a result of the collision?
 a. 0
  b. some positive value
  c. some negative value
  d. No answer above is correct.


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matt

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


misspop

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

atrochim

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Reply 3 on: Yesterday
Wow, this really help

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