Newtons laws

Newton’s first law - balanced

If the forces on an object are balanced the object will stay still or move at a constant velocity

Newton’s first law - unbalanced

If the forces on an object are unbalanced it will change speed or direction

Newton’s second law

The acceleration of an object is directly related to the net force and inversely related to it’s mass

Newton’s third law

If object A exerts a force on object B the object B exerts an equal force back on object A, in the opposite direction

Newton’s third law - example

When a helicopter flies the propellers push the air down and the air pushes upwards

Newton’s first law equation

P=mv (Momentum = mass x velocity)

Newton’s second law equation

F=ma (Force = mass x acceleration)

Newton’s third law equation

FA = -FB (Force A = -Force B)