Topic 1 - Momentum and Collisions (Paper 2)

Question 1

what is the equation for momentum?

Answer 1

momentum = mass x velocity

Question 2

what type of quantity is momentum?

Answer 2

a vector quantity

Question 3

what is the conservation of momentum?

Answer 3

momentum is conserved when no external forces acr, total momentum before = total momentum after

Question 4

what is the equation for force?

Answer 4

force= change in momentum / time

Question 5

how are cars designed to slow people down?

Answer 5

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