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alexdok [17]
3 years ago
11

Your foot brake must be able to stop your car within __________ when it is travelling at 20 mph.

Computers and Technology
1 answer:
ohaa [14]3 years ago
7 0

Answer:

Your foot brake must be able to stop car within 5.18 m

Explanation:

d = s^{2}  / (250 * c_{f} )

d is breaking distance.

s is speed in km/h

c_{f} is coefficient of friction normally 0.8

250 is  constant.

Give the speed in mile first convert it to km/h

1 km = 1.60934 mile

speed in km= 20 * 1.60934

s =32.186 km/h

d=32.186^{2}  / (250 * 0.8)

d= 5.18m

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