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Author Question: Carts A and B have equal masses and travel equal distances on straight frictionless tracks while a ... (Read 127 times)

vHAUNG6011

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on: Jul 28, 2018
Carts A and B have equal masses and travel equal distances on straight frictionless tracks while a constant force F is applied to A, and a constant force 2F is applied to B. The relative amounts of work done by the two forces are related by
 a. WA = 4 WB.
  b. WA = 2 WB.
  c. WA = WB.
  d. WB = 2 WA.
  e. WB = 4 WA.

Question 2

A 2.5-kg object falls vertically downward in a viscous medium at a constant speed of 2.5 m/s. How much work is done by the force the viscous medium exerts on the object as it falls 80 cm?
 a. +2.0 J
  b. +20 J
  c. -2.0 J
  d. -20 J
  e. +40 J


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lgoldst9

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

D

Answer to Question 2

D


vHAUNG6011

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


lgoldst9

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


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