Momentum Flashcards
(6 cards)
1
Q
momentum
A
the (vector) quantity of motion of a moving body
2
Q
conservation of momentum
A
total momentum before = total momentum after
3
Q
momentum safety features
A
- Time taken for change in momentum increases
- force decreases
- reduces impact
4
Q
Crumple Zones
A
- crumple on impact - rather than stopping suddenly
- increases time
- reduces force on person
5
Q
Seat Belts
A
stretch slightly
- stop person flying out of car
- increase time for person to reach stillness
6
Q
Airbags
A
- compressable
- slow person down gradually
- increases time
- reduces force
