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zzz [600]
3 years ago
8

If a car’s speed is 70 miles per hour on a road surface with a drag factor of 0.50 and with a breaking efficiency of 85% (n = .8

5), what would be the length of the skid marks? Round to the nearest tenth.
Mathematics
1 answer:
hichkok12 [17]3 years ago
8 0

Answer:

About 384.3 feet

Step-by-step explanation:

The formula for that is given by,

S= \sqrt{30 \times d \times f \times n}

Where,

S is the speed of the car

d is the distance of skid

f is the drag factor for the road surface

n is breaking efficiency as percentage

Putting the values we get,

S^2=  30 \times d \times f \times n

d= \frac{S^2}{30 \times f \times n}

d = \frac{70^2}{30 \times 0.50 \times 0.85} = 384.3 feet

So the length of skid marks would be 384.3 feet.

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