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Momentum is a vector quantity, it's direction is the same as the direction of the velocity. It
is used in
vehicle safety,crash mats etc
Principle of conservation of motion
For a system of interacting objects the total momentum remains constant providing no external
Changing momentum and forcetime graphs
A resultant force is required to change the momentum of an object
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Can a rocket change momentum?
When the exhaust fumes are expelled from the rocket their momentum changes. For
momentum to change force must be applied as =Ft. According to newton's 3rd law
when the fumes are pushed away by the rocket the fumes must also push on the rocket.
In order for momentum to be conserved the rocket must also experience change in
momentum (due to the force of the fumes).…read more