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Author Question: You are traveling quickly along a freeway. Your car has kinetic energy. You suddenly skid to a stop ... (Read 134 times)

123654777

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on: Jul 28, 2018
You are traveling quickly along a freeway. Your car has kinetic energy. You suddenly skid to a stop because of congestion in traffic. Where is the kinetic energy that your car once had?
  1.All of it goes into internal energy in the road.
  2.All of it goes into internal energy in the tires.
  3.Some of it goes into internal energy of the road and some into internal energy of the tires.
  4.Some of it goes into internal energy of the road, some to internal energy of the tires, some to other internal energy, and some is transferred away by mechanical waves.

Question 2

A dart is loaded into a spring-loaded toy dart gun by pushing the spring in by a distance d. For the next loading, the spring is compressed a distance d/2. How much faster does the second dart leave the gun compared with the first?
  1.two times as fast
  2.the same
  3.half as fast
  4.one fourth as fast


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emsimon14

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

4

Answer to Question 2

3


123654777

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


emsimon14

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


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