How do police determine how fast a car had been traveling after an accident has occurred?


Posted August 15th, 2009 by admin 1 Comment »
car
Candi asked:


The formula r=2 sqrt5L can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in Feet. How far will a car skid at 55 mph? 90 mph

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Posted in Mathematics | 1 Comment »

How long will it take the sports car to pass the police car?


Posted February 24th, 2009 by admin No Comments »
car
Mitch asked:


A sports car is going 40.0m/s. It approaches a stationary police car stopped at the side of the road. When the sports car is still 210 meters from the police car, the police car accelerates at 3.0 m/s^2.

a) How long will it take the sports car to pass the police car?

b) How far will the police car have travelled when the sports car passes it?

c) If the police car were to maintain this acceleration, how fast would it be travelling when it overtakes the sports car?

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Posted in Physics | No Comments »

Should you dim your lights for cars driving the opposite direction on the other side of the median?


Posted February 6th, 2009 by admin 4 Comments »
cars
♥ Tori ♥ asked:


I hope my question is understandable. I’m talking about a four laned highway with a median inbetween. And, is it illegal to flash your lights at other cars to show them there is a police car waiting to catch speeders?
Why did that person say “hope you don’t have a driver’s liscense”. Some people are so stupid. My question has nothing to do with how I drive.

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Posted in Other - Cars & Transportation | 4 Comments »