Jun 17th, 2015
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Physics Unit 4: Physics on the MoveFurther mechanics Use the expression p = mvMomentum = mass x velocity Unit for momentum is or Ns Momentum is a vector because velocity is a vector Investigate and apply the principle of conservation of linear momentum to problems in one dimensionMomentum is conserved in interactions between bodiesA simple collision between trolleys on a friction compensated slope:1. Trolley A is given a given a push so that after release it the interrupter card cuts the light beam2. The trolley will be moving at a constant velocity down a friction compensated slope 3. The time the light beam is interrupted is recorded on the computer and you can work out initial velocity u4. Trolley A has a cork with a pin sticking out so that it couples with the cork on trolley B (both trolleys of same mass)5. When trolley A is released it then attaches to B and both move off together at a new constant velocity 6. This can be measured when the interrupter card on a cuts a second light beam 7. If momentum is conserved then should equal the final velocity should be the initial velocity Investigate and relate net force to rate of change of momentum in situations where mass is constantCollision experiments can also be simulated using gliders on linear air track where friction is negligible.To get the gliders to stick together a bit of blue tac can be where they strike each other2 gliders can be fitted with small magnetic buffers that ar

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