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ololo11 [35]
3 years ago
8

Which of the following is an example of kinetic energy?

Physics
1 answer:
tresset_1 [31]3 years ago
5 0
B. Sound, because everything else sits still and sound waves move
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Answer: 3 m.

Explanation:

Neglecting the mass of the seesaw, in order the seesaw to be balanced, the sum of the torques created by  gravity acting on both children  must be 0.

As we are asked to locate Jack at some distance from the fulcrum, we can take torques regarding the fulcrum, which is located at just in the middle of the length of the seesaw.

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