newtons laws

Newton’s first law

Law of inertia

Every object in a state of rest or uniform motion tends to remain in that state of rest or motion unless an external force is applied to it

Newton second law

The law of acceleration

An increase in the velocity of a moving object is directly proportional to the force applied and inversely proportional to the object mass. The object will accelerate in the direction of the external force.

F= M x A

Newtons third law

Law of reaction

For every action force there is an equal and opposite reaction

The centre of mass

The point where all the mass of a body is concentrated and the sum of all the movements of inertia of the body is zero

Force (N)

Force = Mass x acceleration

Resultant force

When a system of forces is acting on an object, the difference between the forces

Acceleration due to gravity

1kg is equal to 9.81 N