The formula says that S equals the square root of 21d.
The variables are defined as follows:
S= the car’s speed (in miles per hour)
d= the length of the skid mark (in feet)

If a car is traveling at 60 mph and the driver applies the brakes in an emergency situation, how much distance is required before the driver comes to a complete stop?

Question

The formula says that S equals the square root of 21d. 
The variables are defined as follows:
S= the car’s speed (in miles per hour)
d= the length of the skid mark (in feet)

If a car is traveling at 60 mph and the driver applies the brakes in an emergency situation, how much distance is required before the driver comes to a complete stop?

mertsj · Answer

$$S=\sqrt{21d}$$

mertsj · Answer

Replace S with 60 and solve for d

anonymous · Answer

I have set it up, but how do I solve?

anonymous · Answer

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