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IgorLugansk [536]
3 years ago
5

a truck can travle 300 miles in the same time that it takes a car to travel 330 miles. If the truck's rate is 5 miles per hour s

lower than the car's find the average rate for each
Physics
1 answer:
yanalaym [24]3 years ago
5 0
<h2>The speed of car is 55 miles per hour  and speed of truck is 50 miles per hour .</h2>

Explanation:

Let the speed of the car is v miles/h , therefore the speed of truck is ( v - 5 ) miles per hour .

Because time = \frac{Distance}{Speed}

Thus in case of truck the time t₁ = \frac{300}{v-5}

In case of car the time t₂ = \frac{330}{v}

But time is the same in both cases , therefore

\frac{300}{v-5} = \frac{330}{v}

or  30 v = 1650  

or v = 55 miles per hour

Therefore speed of car is 55 miles per hour

Thus speed of truck is 50 miles per hour

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The work done on the filled bucket in raising out of the hole is 2, 925 Joules

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Therefore, the work done is 2, 925 Joules

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Ocean waves pass through two small openings, 20.0 m apart, in a breakwater. You're in a boat 70.0 m from the breakwater and init
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