A.1 kinematic

Terminal velocity

The resultant force on the body in any direction is zero

Newton’s first law

An object continues to remain stationary or to move at a constant velocity unless an external force acts on it

Newton’s second law

The rate of change of momentum of a body is equal to the net external force acting on the body

Newton’s third law

Every action has an equal and opposite reaction

Momentum Direction

Always in direction of velocity

Impulse

The change in momentum

Impulse formula

I=F(delta)t

Newton’s second law formula

F=ma

Momentum formula

P=mv

Average speed

Is the distance travelled divided by the time taken

Instantaneous speed

The rate of change of distance at a given instance in time

Distance

Total length that an object moved in a path. It is a scalar quantity

Displacement

Object’s overall change in position. It is a vector quantity

air resistance Increases if…

Surface area is greater

Air resistance decreases if…

Velocity decreases

Acceleration (in vacuum) of a falling object is:

9.8ms²