Physics
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
Related Questions
Which of the following is not an example of conservation of mechanical energy :
- free fall
- ideal pendulum
- block sliding down a rough surface
- satellite orbiting the earth
Assertion (A): When a hammer is made to fall on a nail fixed upright on a wooden piece, the nail begins to penetrate the wood.
Reason (R): As the hammer starts falling, its kinetic energy begins to change into potential energy.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.
A body falls freely under gravity from rest. Name the kind of energy it will possess
(a) At the point from where it falls.
(b) While falling
(c) On reaching the ground.
State the Principle of conservation of energy.