1. Exertion of pull or push on an object is termed as

2. Newton's first law is also known as

3. A person of mass 50 kg flies to the moon. Given that the earth's gravity is 10 $ms^{-2}$ and the moon's gravity is 1.6 $ms^{-2}$, his weight on the moon would be

4. If a boy of mass 50 kg runs with a force of 100 N, his acceleration would be

5. Energy is the

6. Power is defined as

7. The formula for the gravitational potential energy is

8. When the medium of electromagnetic waves changes from air to water, their speed

9. As the speed decreases, if we change the medium of electromagnetic waves from air to water, the frequency

10. The electromagnetic spectrum comprises