1. Potential energy and kinetic energy are types of

2. The electromagnetic wave with the lowest frequency is

3. Electromagnetic waves carry

4. The force that always opposes motion between two surfaces in contact is called

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

6. A diagram that shows magnitude and direction is termed as

7. The addition of two or more vectors to get a single vector is termed as

8. Newton's first law is also known as

9. The gravitational field strength of the moon is

10. Volume is a