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Author Question: The source of Earth's internal energy involves A) kinetic energy. B) potential energy. C) ... (Read 157 times)

jho37

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on: Jul 29, 2018
The source of Earth's internal energy involves
 
  A) kinetic energy.
  B) potential energy.
  C) radioactivity.
  D) the Sun.

Question 2

At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 29m/s from the top of a building that is 300m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance.
 
  What will be an ideal response?


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kthug

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

Answer: C

Answer to Question 2

2.4 s


jho37

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Reply 2 on: Jul 29, 2018
:D TYSM

ttt030911

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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