A speed of $14 meters per second is t$ he same as:

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28 km / hr

46.6 km / hr

50.4 km / hr

70 km / hr

answer is C.

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Detailed Solution

Concept- The query and the available answers indicate that we must convert meters to kilometers and seconds to hours. As a result, we must have length and time. It is necessary to convert 14 meters per second to kilometers per second.
Now convert 14 meters per second to kilometers per hour.
As a result, 14 meters per equals50.4. The query and the available answers indicate that we must convert meters to kilometers and seconds to hours.
Speed is defined as the distance traveled per unit of time.
Now convert 14 meters per second to kilometers per hour.
As a result, 14 meters per equals 1 km = 1000 = 1 km/ 1000
Hour A period of time equal to 60 that's 3600 seconds. It’s measured as the unit of time.
1 second = 1 hr/ 3600
Now, 14 meters per need to be converted to kilometers per hour.
Let x be 14 per second which is to convert into kilometers per hour
⇒ x = 14m/ s
⇒ 14 1 km/1000/1 hr/ 3600
⇒ 14 × 3600/ 1000kmhr = 50.4 km/ hr.
Hence, the correct option is 3.

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