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Author Question: A 1.6-kg block is attached to the end of a 2.0-m string to form a pendulum. The pendulum is released ... (Read 138 times)

Melani1276

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on: Jul 28, 2018
A 1.6-kg block is attached to the end of a 2.0-m string to form a pendulum. The pendulum is released from rest when the string is horizontal. At the lowest point of its swing when it is moving horizontally, the block is hit by a 10-g bullet moving horizontally in the opposite direction. The bullet remains in the block and causes the block to come to rest at the low point of its swing. What was the magnitude of the bullet's velocity just before hitting the block?
 a. 1.0 km/s
  b. 1.6 km/s
  c. 1.2 km/s
  d. 1.4 km/s
  e. 1.8 km/s

Question 2

A 2.0-kg object moving 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost by the system as a result of this collision.
 a. 20 J
  b. 15 J
  c. 30 J
  d. 25 J
  e. 5.0 J


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ryhom

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

A

Answer to Question 2

A


Melani1276

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


ryhom

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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