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4. Physics and Natural Laws

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18. Force of Impact (cont.)

1. Impact Force is Highest

A head on collision produces the highest impact force. If two identical vehicles are moving at 40 mph and collide, head on, the FOI would be the same as driving into a brick wall at 40 mph (not 80 mph, or adding the speed of both vehicles together, as some might intuitively, but incorrectly, suspect).

2. Impact Force is High

A T-Bone, or side-impact, collision is the next deadliest. Since the vehicles are moving in different directions, some of the FOI is dissipated in forward motion.

3. Impact Force is Medium

A "sideswipe" collision reduces the FOI by spreading it to the sides of the vehicles, as well as opposing directions.

4. Impact Force is Small

A rear-end collision produces a much smaller amount of FOI, since the impact is transferred to the car in front, which then also moves forward.

Lesson Summary


  

Lesson 4 Quiz


You will now answer 5 questions to test what you learned during this lesson. You must answer all questions correctly to receive completion credit for this lesson. You may answer the questions as many times as necessary to get them right.

You should review the lesson material if you don't do well on the quiz.

  1. The best way to maximize the traction of your tires is to:


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  2. The primary factor in decreasing the Kinetic Energy of an object is to:


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  3. According to the formula for stopping distance, how many feet will it take you to stop, from 60 mph?


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  4. Centrifugal force:


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  5. Gravity:


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