Newton's Laws and Momentum

Question 1

Newton’s first law

Answer 1

An object remains at rest or moves with a constant velocity in a strait line unless acted on by an external resultant force

Question 2

Newton’s second law

Answer 2

The rate of change of momentum is directly proportional to, and in the same direction as, the applied resultant force.
(F=ma)

Question 3

Newton’s third law

Answer 3

If body A exerts a force on body B, then body B exerts a force on body A that is equal in size and opposite in direction.