Acceleration

the rate at which velocity (speed) changes over time

Speed

the measurement of distance over time

Force

A push or pull

Velocity

The speed and direction of motion of a moving body.

Friction

the force that opposes the motion of one surface as it moves across another surface

Gravitational Potential Energy

stored energy as a result of the height from the ground with a formula of GPE=mgh

Kinetic Energy

Energy in motion with a formula of KE=1/2mv2

Displacement

Distance and direction of an object's change in position from the starting point.

Air Resistance

friction caused by air

Newton's 1st law

(Law of Inertia) an object in motion tends to stay in motion & an object at rest stays at rest unless acted upon by an outside force.

Newton's 2nd law

Force = Mass x Acceleration or F=ma

Newton's 3rd law

For every action there is an equal and opposite reaction

Law of Conservation of Energy

energy can neither be created nor destroyed: it can only be transformed from one state to another

Gravitational Pull

The acceleration due to gravity g= 9.8 m/s2

Inertia

The tendency of a body to maintain its motion unless acted upon by another force

Momentum

The product of a body's mass and its velocity

Weight

A measure of the force of gravity on an object, measured in Newton instead of Kg.

Mass

The amount of material or matter in an object, measured in Kg. Mass stays the same wherever you are.

Gravity

The force of attraction between all masses in the Universe.

Newton

The unit of measurement for force or weight.

At rest

An object that is in the state of stationary - not moving

Deceleration

A reduction in the velocity of a moving body with respect to time (negative acceleration)

Stopping distance

The sum of thinking (reaction) distance and braking distance.

Reaction time

The time required for the driving to react and press the brake pad after recognition of an object or hazard in the roadway - about 1 second.