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Author Question: What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)? a. 54.0 J b. 64.0 J ... (Read 45 times)

waynest

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  • Posts: 553
on: Jul 28, 2018
What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)?
 a. 54.0 J
  b. 64.0 J
  c. 108 J
  d. 128 J
  e.newton-meter.

Question 2

A system has an increase in internal energy of 60 J while 90 J was removed from the system by heat. How much work was involved during this process and was it done on the system or done on its environment?
 a. 30 J on the system
  c. 150 J on the system
  b. 30 J on the environment
  d. 150 J on the environment


enass

  • Sr. Member
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  • Posts: 380
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


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