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Briefly, the only way for an object to change its momentum is by transferring momentum to another object - in other words, the other object will receive a change in momentum in the opposite direction.
conservation of momentum
Conservation of momentum means that momentum is a constant and the change of momentum or force is zero.
You can't think of momentum as simply "increasing" and "decreasing" - you have to consider momentum as a vector.If in a collision one object's momentum changes by a certain amount, call it "a", the momentum of the other object will change by the opposite amount, "-a" - both "a" and "-a" are vectors that add up to zero. If you consider only the magnitudes of the momentum, by conservation of energy the momenta can't both increase - but they can certainly both decrease, when objects collide head-on.
An impulse is a change in momentum.
Momentum?
IN general change is defined as the difference of initial from the final. So change = Final - Initial. Hence change in momentum = Final momentum - initial momentum
Briefly, the only way for an object to change its momentum is by transferring momentum to another object - in other words, the other object will receive a change in momentum in the opposite direction.
conservation of momentum
Conservation of momentum means that momentum is a constant and the change of momentum or force is zero.
You can't think of momentum as simply "increasing" and "decreasing" - you have to consider momentum as a vector.If in a collision one object's momentum changes by a certain amount, call it "a", the momentum of the other object will change by the opposite amount, "-a" - both "a" and "-a" are vectors that add up to zero. If you consider only the magnitudes of the momentum, by conservation of energy the momenta can't both increase - but they can certainly both decrease, when objects collide head-on.
Use this formula:Final momentum = (initial momentum) + (change in momentum)
When no momentum is exchanged with other objects/systems.When no momentum is exchanged with other objects/systems.When no momentum is exchanged with other objects/systems.When no momentum is exchanged with other objects/systems.
change in momentum
An impulse is a change in momentum.
Impulse-momentum theorem
It is called the momentum-impulse theorem and states that an impulse will change the momentum of an object. For example, if you drop an object when it hits the ground an impulse occurs. The momentum of the object also changes. Jnet = deltap, where deltap is the change in momentum.