Chap 4: Dynamics

Question 1

What is Newton’s first law of motion?

Answer 1

A body remains in a state of rest or uniform motion in a straight line, unless an external force acts on it

Question 2

What is Newton’s second law of motion?

Answer 2

For an object with constant mass, the net external force acting on the object is equal to product of its mass and acceleration

Question 3

What is Newton’s third law of motion?

Answer 3

For every action, there is an equal and opposite reaction (action-reaction)

Question 4

What is friction?

Answer 4

Force that opposes motion or the tendency of motion