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Author Question: What mass ratio is required to launch a rocket from the surface of Mars (escape velocity = 5.0 km/s) ... (Read 23 times)

captainjonesify

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on: Jul 27, 2018
What mass ratio is required to launch a rocket from the surface of Mars (escape velocity = 5.0 km/s) if its engines produce an exhaust velocity of 3.0 km/s?
 
  A) 1.8
  B) 5.3
  C) 6.9
  D) 7.4

Question 2

A cylinder, of radius 8.0 cm, rolls 20. cm in 5.0 s. Through what angular displacement does the cylinder move in this time?
 
  What will be an ideal response?


blazinlyss

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

143


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