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Author Question: A stone is moving on a rough level surface. It has 24 J of kinetic energy, and the friction force on ... (Read 70 times)

joblessjake

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on: Jul 29, 2018
A stone is moving on a rough level surface. It has 24 J of kinetic energy, and the friction force on it is a constant 0.50 N. What is the maximum distance it can slide?
 
  A) 2.0 m
  B) 12 m
  C) 24 m
  D) 48 m

Question 2

Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. Rachel's destination is a star system 14.4 light-years away (one light-year is the distance light travels in one year).
 
  According to Rachel, how long does the trip take? A) 14 years
  B) 15 years
  C) 11 years
  D) 4.2 years
  E) 23 years


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chjcharjto14

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

D

Answer to Question 2

D


joblessjake

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

matt95

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Reply 3 on: Yesterday
Wow, this really help

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