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Author Question: A rocket is traveling away from Earth at 90 the speed of light. The captain turns on a laser light. ... (Read 66 times)

Zulu123

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on: Jul 29, 2018
A rocket is traveling away from Earth at 90 the speed of light. The captain turns on a laser light.
 
  What is the speed of the light as measured by an Earth-based astronomer if the captain aims the laser (a) directly forward or (b) directly backward?

Question 2

A truck has four times the mass of a car and is moving with twice the speed of the car. If Kt and Kc refer to the kinetic energies of truck and car respectively, it is correct to say that
 
  A) Kt = 16Kc.
  B) Kt = 4Kc.
  C) Kt = 2Kc.
  D) Kt = Kc.
  E) Kt = Kc.


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rnehls

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

(a) c = 3.00  108 m/s (b) c = 3.00  108 m/s

Answer to Question 2

A


Zulu123

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Reply #2 on: Jul 29, 2018
TY


rnehls

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Reply #3 on: Jul 29, 2018
You're welcome


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