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Author Question: A merry-go-round spins freely when Diego moves quickly to the center along a radius of the ... (Read 67 times)

sammy

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on: Jul 29, 2018
A merry-go-round spins freely when Diego moves quickly to the center along a radius of the merry-go-round. As he does this, it is true to say that
 
  A) the moment of inertia of the system decreases and the angular speed remains the same.
  B) the moment of inertia of the system decreases and the angular speed decreases.
  C) the moment of inertia of the system decreases and the angular speed increases.
  D) the moment of inertia of the system increases and the angular speed increases.
  E) the moment of inertia of the system increases and the angular speed decreases.

Question 2

A 5.0-N projectile leaves the ground with a kinetic energy of 220 J. At the highest point in its trajectory, its kinetic energy is 120 J. To what vertical height, relative to its launch point, did it rise if there was no air resistance?
 
  A) 44 m
  B) 24 m
  C) 20 m
  D) 10 m
  E) It is impossible to determine the height without knowing the angle of launch.
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ong527

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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sammy

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Reply 2 on: Jul 29, 2018
Wow, this really help

juliaf

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

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