Introduction to Physics

6. Newton’s first law of motion is also known as the law of:
a) Inertia
b) Action and reaction
c) Acceleration
d) Gravitation

7. The force of gravity between two objects depends on their:
a) Temperature
b) Color
c) Mass and distance
d) Volume

8. The acceleration due to gravity on the surface of the Earth is approximately:
a) 9.8 m/s²
b) 3.0 x 10⁸ m/s²
c) 6.67 x 10⁻¹¹ m³/kg/s²
d) 3.14 m/s²

9. The SI unit of force is:
a) Kilogram
b) Newton
c) Joule
d) Watt

10. Which type of energy is associated with the motion of particles?
a) Thermal energy
b) Gravitational energy
c) Potential energy
d) Elastic energy