Newton's Second Law

• Newton's second law states that the rate of change of momentum of an object is proportional to the resultant force acting on it, in the direction of that force
• Momentum is mass multiplied by velocity
• The Principle of Conservation of Momentum states that the vector sum of the momenta of bodies in a system stays constant even if forces act between the bodies, provided there is no external resultant force.
• Impulse is force multiplied by time
• Impulse is the change in momentum
• The area under a force time graph is the change in momentum