Physics - Mechanics - Kinematics - Acceleration - Understanding Acceleration

A 5-step lesson. Step 1: 'Acceleration is the rate of change of velocity - how quickly velocity changes per second'. Formula: a = (v - u) / t where v = final velocity, u = initial velocity, t = time. Units: m/s². Step 2: 'Positive acceleration = speeding up (in the positive direction)'. Example: Car