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Sound travels about 750 miles per hour. If you stand in a parking lotnear a building and sound a horn, you will hear an echo. Suppose ittakes about 12 a second to hear the echo. How far away is thebuilding?

Sagot :

ok

Distance = speed x time

Distance = 750 mi/h x 6s x 1/3600

Distance = 1.25 mi

The building is 1.25 mi far away.

To solve this problem we use the same equation we use to calculate speed in motion problems.

Also, we need to convert time into hours because the speed is in hours.

I divided the time by two because this time is considering the time back and forth.

6 ) 12/2 because 12 is considering the total time (to go and back)

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