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28-10-2022
Physics

Answered

An object, initially at rest, is dropped from a height of 12.0m. The change in gravitational potential
energy when it falls to the ground is 565 J.
The frictional forces are negligible.
What is its speed when it hits the ground?
A) 4.71 m/s
B) 15.5 m/s
C) 47.1 m/s
D) 240 m/s

Answer :

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