University:
California Institute of Technology
Course:
EE/APh 40 | Physics of Electrical Engineering
Academic year:

2022
Views:

326

Pages:

9
Author:

SpaceCadet101

8.6 Momentum Vectors The vector sum of the momenta is the same before and after a collision. 8.6 Momentum Vectors Momentum is conserved even when interacting objects don’t move along the same straight line. To analyze momentum in any direction, we use the vector techniques we’ve previously learned. We’ll look at momentum conservation involving angles by considering three examples. 8.6 Momentum Vectors Momentum is a vector quantity. The momentum of the wreck is equal to the vector sum of the momenta of car A and car B before the collision. 8.6 Momentum Vectors The momentum of car A is directed due east and that of car B is directed due north. If their momenta are equal in magnitude, after colliding their combined momentum will be in a northeast direction with a magnitude times the momentum either vehicle had before the collision. 8.6 Momentum Vectors When the firecracker bursts, the vector sum of the momenta of its fragments add up to the firecracker’s momentum just before bursting. 8.6 Momentum Vectors A falling firecracker explodes into two pieces. The momenta of the fragments combine by vector rules to equal the original momentum of the falling firecracker. 8.6 Momentum Vectors Momentum is conserved for the high-speed elementary particles, as shown by the tracks they leave in a bubble chamber. 8.6 Momentum Vectors Subatomic particles make tracks in a bubble chamber. The mass of these particles can be computed by applying both the conservation of momentum and conservation of energy laws. The conservation laws are extremely useful to experimenters in the atomic and subatomic realms. 8.6 Momentum Vectors What is true about the vector sum of momenta in a collision?

Momentum Lecture 6

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