Determine the speed of the car from the length of skid mark

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1. After an accident, how do police determine the speed at which the car had been traveling?
The formula r = 2 sqrt(5L) 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 65mph? at 100 mph?

1.The formula r=2sqrt(5L) can be used to approximate thespeed r, in miles per hour, of a car that has left skidmarks of length L, in feet. How far will a carskid at 30mph?
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Police lieutenants, examining the scene of an accident involving two cars, measure the

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1. At a height of h meters, you can see V kilometers to the horizon. These numbers are related by the equation . A person can see 392 km to the horizon from an airplane window. How high is the airplane?
2. The formula can be used to approximate thespeed r, in miles per hour, of a car that has left skidmarks

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1. To qualify for the finals of a racing event, a race car must achieve an average speed of 220 km/h on a track with a total length of 2400 m. If a particular car covers the first 1000 m of the track with an average speed of 180 km/h, what minimum average speed must it have on the remainder of the track to qualify?
3. How lon

1. Rewrite with rational exponents
2. Simplify by factoring
3. In the right triangle, find thelength of the side not given. Give an exact answer and an approximation to three decimal places
What is the exact value of c, what is the value of c approximated to three decimal places?
4. Multiply and simplify by