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Author Question: A 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air ... (Read 58 times)

rlane42

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on: Jul 29, 2018
A 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. If the 10-kg rock falls with acceleration a, what is the acceleration of the 20-kg rock?
 
  A) 4a B) a/2 C) a/4 D) 2a E) a

Question 2

Suppose you are on the moon and you drop a rock and a feather at the same time. You will find that
 
  A) the two fall at the same speed, but this speed is slower than a rock would fall on Earth.
  B) the rock falls faster than the feather, although both of them fall slower than they would on Earth.
  C) the rock falls faster than the feather, and both speeds are the same as they would be on Earth.
  D) the two fall at the same speed, and this speed is the same as the speed of a rock falling on Earth.
  E) they don't fall--they remain suspended above the surface of the moon.
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thall411

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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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rlane42

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Reply #2 on: Jul 29, 2018
Thank you!


thall411

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Reply #3 on: Jul 29, 2018
Always glad to help...


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