Flashcards
Momentum
Cards in this deck (4)
- 1Momentum = mass x velocity simplified: P = m x v Units: Kg m/sChange in momentum = force x time
- 2Ft = mv - mu Ft is the impulse and is measured in NSConservation of momentum
If a moving object collides with another, it shares its momentum with the object it strikes. Momentum is always conserved in a collision - 3Conservation of momentum: total momentum before collision = total momentum after collisionSafety in cars and Impulse:
Crumple zones
Seat belts
Airbags - 4Crumple zones Cars are designed so that, in case of impact, the front and back of the car "crumple" gradually. This links with Impulse because they increase the time it takes for the car to come to a stop and therefore reduce the force that is experienced by passengers.Seat belts
Seat belts extend the time it takes for passengers to come to a stop if an accident should occur. Increasing the time to stop the force that the passengers experience
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- Physics (Momentum) Flashcards on Momentum, created by AliceBridgnell on 28/05/2013.
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- AliceBridgnell
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