Momentum pdf
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Force on b is equal and opposite to force on R (3 rd law), and the two forces act for the same time same impulse delivered to each, but in opposite direction same change in momentum for R as for b, but in the opposite direction i.e. This is the principle of conservation It has the same direction as corresponding velocity. Direction of p = direction of velocity v. the momentum changes for the system cancel to Now we de ne the total momentum of the two-body system to be: P~ = ~p A + ~p B (the total momentum) Substituting our equation for total momentum into Eq.8, we nd: F~ B on A + F~ A on B = d~P dt = ~0 If the vector sum of the external forces on a system is zero, the total momentum of the system is constant. units [p] = kg m/s (no special name) (No one seems to know why we use the symbol p for momentum, except that we couldn't use m because that was already used for mass.) Definition: Total momentum of several masses: m1 with velocity v1, m2 with velocity v2, etc Momentum The total momentum of the system is conserved during the collision: A Bm/s A B v u p mv==== r r m v m v m uA A i A B, = +• Momentum is a vector. Direction of p = direction of velocity v. Force on b is equal and opposite to force on R (3 rd law), and the two forces act for the same time same impulse delivered to Now we de ne the total momentum of the two-body system to be: P~ = ~p A + ~p B (the total momentum) Substituting our equation for total momentum into Eq.8, we nd: F~ B Linear Momentum and Collisions The Important Stuff Linear Momentum The linear momentum of a particle with mass m moving with velocity v is defined as p = mv Momentum and Collisions: sublevels 4,andNewton's Third Law and Collisions: In a collision between objectand object 2, both objects encounter a force resulting from their mutual interaction with each other. units [p] = kg m/s (no special name) (No one seems to know why we use the symbol p for momentum, except that we Momentum The total momentum of the system is conserved during the collision: A Bm/s A B v u p mv==== r r m v m v m uA A i A B, = +• Momentum is a vector. General expression for the momentum conservation: the total momentum before the collision is equal to the total momentum after momentum of the rifle+bullet system does not change. It has the momentum of the rifle+bullet system does not change. Momentum is a vector. Momentum is a vector. The force on object(F1) is equal to and opposite in direction as the force on object(F2) p m v.