car design and safety Flashcards
1
Q
what do brakes do
A
work against kinetic energy
2
Q
name the four ways cars are designed for safety
A
- crumple zones
- seat belts
- air bags
- side impact bars
3
Q
what is the crumple zone and how Is it safe
A
- the front and back of the car crumple when hit an impact
- stop the passengers being crumpled
4
Q
how do seat belts help safety
A
-reduces the force acting on the chest
5
Q
how do air bags bring safety
A
-prevent the passengers hitting hard surfaces
6
Q
how do side impact bars help safety
A
-they help direct the kinetic energy away from the passenger
