Work and energy Flashcards
1
Q
How can you reduce AERODYNAMIC LOSSES?
A
by using more streamlined designs
2
Q
How can you reduce ROLLING RESISTANCE?
A
by having correctly inflated tyres
using materials which don’t heat up as much as they are squashed
3
Q
How do you reduced IDLING LOSSES?
A
By using start strop systems
4
Q
How do you reduced Inertial Losses?
A
By having lighter cars
5
Q
In terms of WORK DONE how does a crumple zone and airbag keep you safe?
A
an air bag and a crumple zone
- increase the distance over which the energy is transferred,
- so reducing the force
6
Q
In terms of MOMENTUM how does a crumple zone and an airbag help keep you safe?
A
the same change in momentum happens over a longer time
there is decreased deceleration
the force decreases
