Forces acting on a vehicle:
- Weight
- Reaction force (road pushing up)
- Driving force
- Friction
- Air resistance
Stopping distance = thinking distance + braking distance
Thinking distance can be effected if the diver's tired, distracted, drunk, taken drugs.
Braking distance can be effected if the brakes are worn, the road is poor, the weather is poor.
Acceleration - bigger driving force
Deceleration - smaller driving force and/or larger resistant forces
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