braking, thinking, stopping distance, force etc

• factors affecting braking distance

  age

  alcohol usage

  fatigue

  drug use/misuse
• stopping distance is the sum of braking distance and thinking distance
• braking distance = kinetic energy / brake force
• thinking distance = speed travelling x reaction time
• in an explosion, the sum of momentum needs to be equal to 0 before and after the explosion
• braking distance depends on

  1. mass
  2. force of brakes
  3. condition of brakes
  4. road condition
  5. gradient of road
  6. weather
  7. speed
• thinking distance depends on the speed of the car x reaction time
• factors affecting thinking distance

  age

  alcohol

  drug misuse/use
• energy transfer of brakes

  KE --> thermal and sound
• the braking distance is the distance travelled whilst a driver is reacting
• thinking distance is the distance travelled whilst a driver is reacting
• stopping distance is the sum of the thinking distance and the braking distance when being required to stop