Gail ran the 100m dash in 10.74 seconds. How many Km per hour is this?
speed=100m/10.74sec * 1km/1000m * 3600sec/hr
speed= (100*1*3600/10.74*1000*1) km/hr
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To calculate the speed in kilometers per hour, we need to convert the distance and time to the corresponding units.
First, let's convert the distance from meters to kilometers. There are 1,000 meters in a kilometer, so to convert meters to kilometers, we divide the distance in meters by 1,000.
Gail ran the 100-meter dash, so the distance in kilometers is 100 meters divided by 1,000, which gives us 0.1 kilometers.
Next, we need to convert the time from seconds to hours. There are 3,600 seconds in an hour, so to convert seconds to hours, we divide the time in seconds by 3,600.
Gail completed the 100-meter dash in 10.74 seconds. To convert this to hours, we divide 10.74 seconds by 3,600, which gives us approximately 0.00298333 hours.
Finally, to calculate the speed in kilometers per hour, we divide the distance in kilometers (0.1 km) by the time in hours (0.00298333 hours).
Dividing 0.1 km by 0.00298333 hours gives us approximately 33.52 kilometers per hour.
Therefore, Gail's speed in the 100m dash is approximately 33.52 kilometers per hour.