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Aneli [31]
3 years ago
15

The stopping distance d of an automobile is directly proportional to the square of its speed s.

Mathematics
1 answer:
IRINA_888 [86]3 years ago
3 0

Answer:

192 feet is the stopping distance at 48 mph.

Step-by-step explanation:

Set up the proportion     \frac{x}{75} =\frac{48^{2} }{30^{2} }    

x/75 = 2304/900   cross multiply  to get 900x = 172800

172800 ÷ 900 = 192

x = 192

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