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Elenna [48]
3 years ago
14

David drove 70 miles in the first 1 ¾ hours of his trip. how much longer should it take him to drive an additional 120 miles if

he drives at the same average speed?
Physics
1 answer:
steposvetlana [31]3 years ago
5 0

Let us first calculate the average speed of David,

Av speed = Distance traveled/ Time taken

We have, distance = 70 miles

Time = 1\frac{3}{4} hours = 1.75 hours

Av speed = \frac{70}{1.75}

= 40 miles/hour

Another 120 miles will be traveled in time, t = 120/40 = 3 hours

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