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A 10 kg rock is suspended 320 m above the ground.


What is its kinetic energy before it is released?


K.E. =


0 J

1.6 x 104 J

3.1 x 107 J

1.0 x 107 J

Verified Answer :

As object is not in the motion, Kinetic Energy will be nothing here, as Kinetic energy is the energy of an object by the virtue of it;s motion.

In short, Your Answer would be Option A

Hope this helps!

Answer:

It is 0 J.

Explanation:

Kinetic energy is the energy possessed by the body by virtue of its motion.

The formula of kinetic energy is given by

\(K = \frac{1}{2}\times m\times v^{2}\)

As the rock is suspended 320 m above the ground, so, the rock is not in motion.

It means that the speed of rock is zero.

So, by using the formula of kinetic energy

K = \frac{1}{2}\times m\times 0^{2}

K  = 0 J

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