Question

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place

A: kinetic to potential
B: sound to mechanical
C: mechanical to heat
D: potential to kinetic
Can someone plz help

Answer 1

Answer: Option (D) is the correct answer.

Step-by-step explanation:

Potential energy is the energy present in an object due to its position.

Mathematically, P.E = mgh

where, m = mass

g = acceleration due to gravity

h = height of the object

On the other hand, kinetic energy is the energy obtained by an object because of its motion.

Therefore, when position of an object changes then it means the object has gained kinetic energy.

So in the given picture, before the rock starts to fall it only has potential energy and when it falls its position has changed due to its motion. Hence, kinetic energy has been gained by the rock.

Thus, we can conclude that potential to kinetic energy conversion is taking place in the picture.

Answer 2

Potential to kinetic energy

Step-by-step explanation:

In this scenario, the rock is pushed over the edge and it begins to fall. There must be some conversion of energy.

We know that the potential energy is possessed by an object when it is at certain height under the influence of gravity. The energy possessed due to the motion of an object is called kinetic energy.

When the object is at the edge of the rock, it will have potential energy which is given by m g h.

As it begins to fall, the potential energy decreases and it gets converted into kinetic energy which is given by 1/2 mv².

So, the correct option is (d) " potential to kinetic ".