Physics

Physics Unit 4: Physics on the Move
pull ahead mechanics
Use the expression p = mv
* urge = crowd to prolongher x swiftness
* Unit for momentum is kgms-1 or Ns
* Momentum is a vector beca theatrical role velocity is a vector
enquire and apply the dogma of conservation of linear momentum to problems in one dimension
* Momentum is conserved in interactions between bodies
A simple collision between trolleys on a clangour compensated slope:
1. Trolley A is given a given a push so that after r aside it the interrupter card cuts the light distribute
2. The trolley will be woful at a incessant velocity down a friction compensated slope
3. The time the light beam is interrupted is recorded on the computer and you shadower urinate out initial velocity u
4. Trolley A has a cork with a pin sticking out so that it couples with the cork on trolley B (both trolleys of said(prenominal) jackpot)
5. When trolley A is released it then attaches to B and both touch off 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 mau should equal ma+mbv the final velocity should be ½ the initial velocity

Investigate and relate dinero force to rate of change of momentum in situations where mass is constant
* Collision experiments can also be simulated utilize 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 other
* 2 gliders can be fitted with small magnetic buffers that are set to repel
* When they conflict they bounce apart, so if the computer records the initial velocity of the gliders travel towards each other and then when the move apart the principle of conservation of momentum can be tested.


Derive and use the expression Ek=p22m for the kinetic energy of a non-relativistic particle
* Ek=12mv2
* p=mv
* p2=m2v2 and v2=2Ekm
* p2=m2×2Ekm
* p=m2×2Ekm...If you want to get a full essay, order it on our website: Orderessay



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