Newtons laws of motion and collisons Flashcards
Newtons second law
Rate of change of momentum of a body is proportional to the force acting on it and takes place in the direction of the force
Newtons third law
When a body exerts a force on another body. The. Second body exerts an equal and opposite force on the first body
Linear momentum
Product of mass and velocity and has a direction
Net force on a body
Is equal to the rate of change of momentum
The special case for newtons second law
F=ma given that mass remains constant
Impulse of a force
Change in momentum
What is the area under the graph equal to on force against time
The impulse
Impulse
Change in momentum mu-mv
Principle of conservation of momentum
The total momentum of a closed system is conserved
Perfectly elastic collision
All kinetic energy is conserved
Inelastic collision
Kinetic energy is not conserved
Newtons first law
A body will remain at rest or continue at a constant velocity unless acted upon by a force
momentum is conserved but in what does a change occur
The momentum of a system is always conserved in the interaction between bodies but some change in kinetic energy usually occurs
Force equals
∆p/∆t
