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A car is traveling at a constant speed of 45 miles per hour. How many feet does it travel in 3 seconds? Remember that 1 mile is 5280 feet.

Respuesta :

zexius

First you can convert 45 miles per hour to feet per hour:

45 × 5,280 = 237,600 feet per hour

Now you must remember that there are 60 minutes in an hour, and 60 seconds in a minute. So you can divide 237,600 feet per hour by 60 to get feet per minute:

237,600 ÷ 60 = 3,960 feet per minute

Now you just have to divide 3,960 by 60 again to get feet per second:

3,960 ÷ 60 = 66 feet per second

Now you know how fast the car can travel (in feet) in a second. So to work out how many feet it travels in 3 seconds, you just have to multiply 66 by 3:

66 × 3 = 198 feet

Therefore your final answer is 198 feet :)

ajinems

The car will travel at 198 feet  in 3 seconds.

The speed of the car = 45miles/ hour

To convert miles to feet;

                         1 mile = 5280 feet

                   ∴45 miles = x feet

Make x feet the subject of formula buy cross multiplying,

                          x feet = 45 × 5280

                                     = 237,600 feet

To convert 1 hour to seconds multiply by 3,600

                     1hour = 3600 × 1

                               = 3600secs.

Therefore, the speed of car in feet/seconds,

237,600 feet = 3600seconds

x feet              = 3 seconds

Make x feet the subject of formula by cross multiplying,

x feet = [tex]\frac{237600}{3600}[/tex]  ×3

          = 66 × 3

          = 198 feet

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