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Author Question: Popeye, of mass 75.0 kg, has just downed a can of spinach. He accelerates quickly and stops Bluto, ... (Read 33 times)

Capo

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on: Jul 28, 2018
Popeye, of mass 75.0 kg, has just downed a can of spinach. He accelerates quickly and stops Bluto, of mass 650 kg (Bluto is very dense), who is charging in at 15.0 m/s. What was Popeye's speed?
 a. 1.73 m/s
  b. 48.3 m/s
  c. 120 m/s
  d. 130 m/s
  e. 15.0 m/s

Question 2

Two skaters, both of mass 75.0 kg, are on skates on a frictionless ice pond. One skater throws a 0.40-kg ball at 6.0 m/s to his friend, who catches it and throws it back at 6.0 m/s. When the first skater has caught the returned ball, what is the velocity of each of the two skaters?
 a. 0.031 m/s, moving apart
  b. 0.063 m/s, moving apart
  c. 0.031 m/s, moving towards each other
  d. 0.063 m/s, moving towards each other
  e. 12 m/s, moving apart


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juliaf

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

d

Answer to Question 2

b


Capo

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


juliaf

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


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