1.6 Newton's Laws

Question 1

What is Newton’s first law of motion?

Answer 1

Every body will continue in a state of rest or uniform velocity unless acted on by a resultant force.

Question 2

What is Newton’s second law of motion?

Answer 2

Acceleration is directly proportional to Fr action in the same direction and is inversely proportional to mass, Fr = ma.

Question 3

What is Newton’s third law of motion?

Answer 3

If body A exerts a force on body B, body B exerts an equal and opposite force on body A.

Question 4

What are the important things to remember in Newton’s third law questions?

Answer 4

• The forces must act on 2 separate bodies.
• The forces must be equal.
• The forces must act in opposite directions.
• The forces must be of the same type.