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Author Question: A baseball outfielder throws a baseball of mass 0.15 kg at a speed of 40 m/s and initial angle of ... (Read 84 times)

jwb375

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on: Jul 28, 2018
A baseball outfielder throws a baseball of mass 0.15 kg at a speed of 40 m/s and initial angle of 30. What is the kinetic energy of the baseball at the highest point of the trajectory?

Question 2

As a 1.0-kg object moves from point A to point B, it is acted upon by a single conservative force which does -40 J of work during this motion. At point A the speed of the particle is 6.0 m/s and the potential energy associated with the force is +50 J. What is the potential energy at point B?
 a. +72 J
  b. +10 J
  c. +90 J
  d. +28 J
  e. +68 J


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aloop

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

90 J

Answer to Question 2

C


jwb375

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Reply 2 on: Jul 28, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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