What is the equation linking momentum, mass and velocity?
p=mv
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What type of quantity is momentum?
Vector
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What is the unit of momentum?
kgm/s
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What is the Law of Conservation of Momentum?
momentum before = momentum after
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Two runners collide and move off together. Runner A has a velocity of 5 m/s and mass of 85kg. Runner B has a velocity of 9 m/s and mass of 60kg. How fast do they move after the collision?
1 m/s
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What equation links force, change in momentum and time taken?
F = change in momentum/time
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What happens when a force acts upon an object?
A change in momentum occrs
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How do you decrease the force acting upon an object that has experienced a change in momentum?
Increase the time taken for the change to occur
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What is the function of a crumple zone?
Crumple Zones crumple on impact and increase the time taken for a change of momentum to occur
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What is the function of seat belts?
Seat Belts stretch slightly to increase the time taken for the wear to stop and reduces the force acting on the chest
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What is the function of air bags?
Air Bags expand on impact and collide with a person to increase the time taken for their change of momentum to occur
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Other cards in this set
Card 2
Front
What type of quantity is momentum?
Back
Vector
Card 3
Front
What is the unit of momentum?
Back
Card 4
Front
What is the Law of Conservation of Momentum?
Back
Card 5
Front
Two runners collide and move off together. Runner A has a velocity of 5 m/s and mass of 85kg. Runner B has a velocity of 9 m/s and mass of 60kg. How fast do they move after the collision?
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