Physics - Mechanics - Work and Energy - Kinetic energy - Kinetic Energy
A 4-step lesson. Step 1: 'Kinetic Energy is the energy an object has because it's MOVING. KE = ½mv²'. m = mass (kg), v = speed (m/s), KE in Joules. Step 2: 'KE depends on speed SQUARED. This means: Double the speed → 4× the kinetic energy. Triple the speed → 9× the kinetic energy. This is why car cr