Dynamics

Question 1

What is Newton’s first law?

Answer 1

A body continues to be at rest or at constant velocity, unless acted by a resultant force

Question 2

What is Newton’s second law?

Answer 2

The rate of change of momentum of a body is directly proportional to the resultant force acting on it and the change occurs in the same direction as the resultant force

Question 3

What is Newton’s third law?

Answer 3

If body A exerts a force on body B, then body B exerts a force of the same kind that is equal in magnitude but opposite in direction on A

Question 4

What is inertia?

Answer 4

Resistance of a body to change its state of rest or uniform motion in a straight line

Question 5

What is mass?

Answer 5

Property of a body which resists change in motion

Question 6

What is linear momentum?

Answer 6

Linear moment of a body is the product of mass and velocity

Question 7

What is impulse?

Answer 7

Product of a force acting on an object and the time for which the force acts

Question 8

What is principle of conservation of momentum?

Answer 8

Total momentum of a system remains constant, provided no external resultant force acts on it