Question

State and explain one example where (i) Kinetic energy is present in
a body and is used; and (ii) Potential energy is present in a body is
used.

(i) Kinetic energy is the energy present in a body by virtue of its motion. When water is stored in a dam at particular height, we say it has maximum potential energy as the water is present at a height. When this water is allowed to fall down from a certain height, it is said to have kinetic energy. When the water falls on a turbine, the paddle wheels rotates to rotate the turbine. Hence the kinetic energy of water is used to push or rotate the turbine which is further used to produce the electricity.
(ii) Potential energy present in a body is due to virtue of its position. In hydel power plant, the kinetic energy of water to rotate the turbine is obtained by the use of potential energy of water stored in dam. When water is stored in dam at a certain height, potential energy is stored in the water which transforms into kinetic energy when it released from that height.

Answer 1

Explanation:

When the water falls on a turbine, the paddle wheels rotates to rotate the turbine. Hence the kinetic energy of water is used to push or rotate the turbine which is further used to produce the electricity. (ii) Potential energy present in a body is due to virtue of its position.

Answer 2

Kinetic energy is the energy present in a body by virtue of its motion. When water is stored in a dam at particular height, we say it has maximum potential energy as the water is present at a height. When this water is allowed to fall down from a certain height, it is said to have kinetic energy