Car Design
- Created by: Jo Wells
- Created on: 28-12-12 20:15
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- Car Design
- Brakes
- Work against the kinetic energy of the car
- Transfer it to heat & sound
- Regenerative brakes put the motor into reverse (not heat energy)
- Slowing the wheels
- Motor acts as an electric generator, converting kinetic into electrical energy = stored as chemical energy in vehicle's battery
- Store energy, rather than waste it
- Work against the kinetic energy of the car
- Designed to convert KE safely in a crash
- So people in car DON'T experience huge forces
- Crumple Zones (at front & back)
- KE is converted (into other energy) by the car body as it changes shape
- Increase impact time, thus decreasing force produced
- Side Impact Bars (strong metal tubes in door panels)
- Help direct KE away from people to other areas
- Seat Belts
- Stretch, increasing time taken to stop
- Some KE of wearer is also absorbed into belt
- Air Bags
- Slow person down more gradually
- Prevent person hitting surfaces in car
- Power Ratings
- More powerful engine = more energy it transfers from fuel every second (FASTER)
- Typical small car = 50kW & sports car = 100kW
- Aerodynamic = minimises air resistance
- More aerodynamic = higher top speed
- Brakes
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