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Author Question: Two identical particles move toward each other, one twice as fast as the other. Just before they ... (Read 30 times)

formula1

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on: Jul 29, 2018
Two identical particles move toward each other, one twice as fast as the other. Just before they collide, one has a kinetic energy of 25 J and the other 50 J. At this instant their total kinetic energy is
 
  A) 25 J.
  B) 50 J.
  C) 75 J.
  D) none of the above
  E) need more information

Question 2

A motorcycle moving at 50 km/h skids 10 m with locked brakes. How far will it skid with locked brakes when traveling at 150 km/h?
 
  A) 10 m
  B) 30 m
  C) 50 m
  D) 90 m


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onowka

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: D


formula1

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Reply 2 on: Jul 29, 2018
Gracias!

atrochim

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Reply 3 on: Yesterday
Excellent

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