Momentum :
Momentum Is the product of mass of an object and its velocity
P=mv
P=momentum kg*m/s
M=mass in kg
V=velocity in m/s
Impulse :
Impulse The change of momentum of an object is equal to the impulse that acts on it
I=ft
I-impulse N*s
F=force in Newton
T=time in seconds
Therefore ft=mv
Newton’s Third Law of Motion :
Newton’s Third Law of Motion “For every action there is an equal and opposite reaction.”
This a statement of the law of conservation of momentum.
Law of Conservation of Momentum :
Law of Conservation of Momentum States “In an isolated system whenever two objects interacts, the total momentum is the same before and after the interaction.”
Important facts :
Important facts Only an external unbalanced force can change the total momentum of a system
The sum of the momentum of any closed system cannot change
Inelastic Collisions :
Inelastic Collisions When the collision is perfectly inelastic, the two objects will stick together and move as one.
Momentum is conserved
Kinetic energy is not conserved and it converted to either sound or absorbed as internal energy
Elastic Collisions :
Elastic Collisions “Two objects return to their original shapes and move away from the collision separately.”
Momentum and kinetic energy are conserved.