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Author Question: Two blocks are released from the top of a building. One falls straight down while the other slides ... (Read 303 times)

Awilson837

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on: Jul 28, 2018
Two blocks are released from the top of a building. One falls straight down while the other slides down a smooth ramp. If all friction is ignored, which one is moving faster when it reaches the bottom?
 a. The block that went straight down.
  b. The block that went down the ramp.
  c. They both will have the same speed. d. Insufficient information to work the problem.

Question 2

A heat engine exhausts 4000 J of heat while performing 2000 J of useful work. What is the efficiency of the engine?
 a. 15
  c. 40
  b. 33
  d. 60


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heyhey123

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

C

Answer to Question 2

B


Awilson837

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Sarahjh

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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