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Author Question: How much work must be done by frictional forces in slowing a 1000-kg car from 26.1m/s to rest? A) ... (Read 63 times)

Sufayan.ah

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on: Jul 29, 2018
How much work must be done by frictional forces in slowing a 1000-kg car from 26.1m/s to rest?
 
  A) 4.09  105 J B) 3.41  105 J C) 2.73  105 J D) 4.77  105 J

Question 2

Calculate the average force an outside object would have to exert to bring a 1200-kg car to rest in 15 cm when the car had an initial speed of 2.0 m/s (about 4.5 mph).
 
  A) 1.8  104 N
  B) 1.6  104 N
  C) 5.4  104 N
  D) 6.5  105 N
  E) 3.2  104 N


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mceravolo

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

B

Answer to Question 2

B


Sufayan.ah

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

Joy Chen

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Reply 3 on: Yesterday
Excellent

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