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defon
3 years ago
10

The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car travelling

70 mph can stop in 270 ft, how many feet will it take the same car to stop whenit is travelling 60 mph?
Physics
1 answer:
Crank3 years ago
4 0
270/70^2  = x/80^2

Cross multiply

270 (6400) = 4900x   

x = 270(6400)/4900

352 and 32/49 feet

Hope this helps


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