Mechanics Laws

Question 1

What is Newton’s first law of motion?

Answer 1

A body continues in a state of rest or of uniform motion in a straight line unless it is acted upon by an external force.

Question 2

What does Newton’s law of gravitation state?

Answer 2

Force between two particles is proportional to their masses and inversely proportional to the square of the distance between them.

Question 3

What is Newton’s second law of motion?

Answer 3

The rate of change of momentum is equal to force OR force acting on a body is equal to the product of its mass and acceleration.

Question 4

What is Newton’s third law of motion?

Answer 4

To every action there is an equal and opposite reaction. The action and reaction act on two different bodies simultaneously.

Question 5

The Law of Conservation of Energy

Answer 5

Energy cannot be created nor destroyed, but it can be transformed or transferred into other energy forms

Question 6

Inertia

Answer 6

The property of matter that causes it to resist any change in its state of rest or of uniform motion

Question 7

Impulse

Answer 7

Change in momentum caused by an external force

Question 8

Hooke’s Law

Answer 8

The restored force is proportional to the extension up to the limit of proportionality