Distance, Speed & Acceleration

Distance - overall how far (road)

Displacement - how far in a particular direction (direction)

• speed = distance / time

• velocity = displacement / time

• velocity = direction

• rate of change in velocity

• acceleration or decceleration = change in velocity / time

• acceleration = speeding up (positive no.)

• decceleration = slowing down (negative no.)

• acceleration is used to describe decceleration with ' - '

• acceleration - = decceleration