Topic 1 - Momentum and Collisions (Paper 2) Flashcards
1
Q
what is the equation for momentum?
A
momentum = mass x velocity
2
Q
what type of quantity is momentum?
A
a vector quantity
3
Q
what is the conservation of momentum?
A
momentum is conserved when no external forces acr, total momentum before = total momentum after
4
Q
what is the equation for force?
A
force= change in momentum / time
5
Q
how are cars designed to slow people down?
A
crumple zones - increase time taken for the car to stop
seat belts - stretch slighly, increasing time taken for the wearer to stop
air bags - slow you down more gradually
