Introduction to Force

Q.

A body of mass m₁ exerts a force on another body of mass m₂. If the magnitude of the acceleration of m₂ is a₂, then the magnitude of the acceleration of m₁ is (considering only two bodies in space).

Q.

Which instrument do scientists often use to measure the amount of force?

1. Spring Scale

2. Balance

3. Magnet

4. Thermometer