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To calculate how long it takes a car to drive 100 meters at 25 mph, convert to same length units then the time can be calculated from time = distance / speed:

1 hr = 3600 sec

1 mile = 1609.344 m (exactly)

� 25 miles = 25 � 1609.344 m = 40233.6 m

� 100 m at 25 mph takes:

time = 100 m / 40233.6 m/hr � 0.00249 hr

� 0.00249 hr = 0.00249 � 3600 sec � 8.95 sec

Thus it takes just under 9 seconds to drive 100 m at 25 mph.

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9y ago

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