A stays at , or if moving it continues to move with velocity, unless an force makes it differently.

1N =

F =

Newton's second law states that = x , when the force is in , the mass in and the acceleration is in .

When using Newton's law, points should be noted. The law also shows that will be largest when is large and small.

Weight = x

W =

The of a gravitational field is defined as the acting on unit in the field.

N/kg =

An object's constant velocity is called velocity.