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Force and law of motion, Motion, Force proportional to rate of change of…
Force and law of motion
Push or pull
Cgs unit- dyne
Si unit- Newton
Affect change in
Newton's law of motion
Newton's first law of motion
Inertia of rest
Inertia of motion
Inertia of direction
Newton's second law of motion
Every action has equal and opposite reaction
Its states that rate of change of momentum of a body is directly proportional to the applied force and takes place in which the force acts
Newton's third law of motion
A body at rest will remain at rest until and unless and external force is applied to change its state of rest or of uniform motion
Momentum
Si unit-kg.m/s
Rate of change of momentum: mv-mu/t
Change in momentum:mv-mu
Momentum=mass*velocity
Law of conservation of momentum
The total momentum before a collision is equal to the total momentum after the collision if no external force is act on the system
Balanced force
Resultant=0
Unbalanced force
Resultant is not=0
Motion
Force proportional to rate of change of momentum
