Question

A bird flying at a certain height possesses:-
1. K.E. only
2. P.E. only
3. both K.E. and P.E
4. neither K.E. nor P.E.

Answer 1

Correct Answer - Option 3 : both K.E. and P.E

Concept:

Potential energy (PE):

• The energy possessed by a body by virtue of its position or configuration is called potential energy.
• PE = mgh
• where, m = mass of the body, g = acceleration due to gravity and h = height of the body

Kinetic Energy (KE)
The energy possessed by a body due to the virtue of its motion is called kinetic energy. 

\(K = \frac{1}{2} mv^2\)

m is mass, v is speed of the bird

Explanation:

• The bird is flying at a height,so it is having potential energy due to height. 
• It is flying, so it must be having some speed. So, the bird also have kinetic energy. 
• So, both kinetic energy and potential energy are possessed by the bird 

'both K.E. and P.E.' is the correct option.