Physics - Motions & Forces

What is the difference between distance and displacement

• Displacement is the distance an object moves in a straight line from a starting point to a finishing point while distance is how far an object moves

• Displacement is a vector quantity distance is a scalar quantity

What is the difference between speed and velocity

Velocity describes an object’s direction as well as its speed and is a vector quantity while speed does not because it is a scalar quantity

What is used to work out resultant force

Pythagoras theorem

Formula for resultant force

a²+ b²=c²

What is acceleration

The change in speed