Motion

Speed = distance / time

Average speed

• Taking the total distance then divide it by the total time.

Instantaneous speed

• Measured in a very short interval

Distance time graph

• Gradient of distance time graph is the speed

Speed time graph

• Gradient is the acceleration.

• The area under the graph is the distance travelled.

Acceleration

• change in velocity divided by the change in time

Vector

• Quantities that have a magnitude and direction

• Force, Momentum, Electrical current, Displacement, Velocity, Acceleration

Scalars

• Quantities that only have magnitude

• Temperature, Energy, Time, Distance, Speed

Ticker tape timers