Newtonian Laws of Motion

Question 1

Newton’s 1st Law

Answer 1

A body will move at a constant velocity unless a resultant external force acts upon it.

Question 2

Newton’s 2nd Law

Answer 2

The rate of change of momentum of a body is directly proportional to the resultant external force upon it.

Question 3

Newton’s 3rd Law

Answer 3

If a body A exerts a force on body B, then body B exerts a force on body A which is; equal in magnitude, opposite in direction, and of the same type.

Question 4

Newton’s Law of Gravitation

Answer 4

Any two masses, m and M attract one another with a force that is proportional to the product of the two masses, and inversely proportional to the square of the distance between the two masses.