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if u want speed do distance divide by time but first u need to change 120 km to meters and 2 hours to minutes then divide them

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Why change km to metres and hours to minutes? Why not just do 120 km / 2 hours = 120/2 km per hour = 60 km per hour. The end!

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9y ago
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13y ago

Let us change 70.0 m/s to kph

70.0 m/s (1 kilometer/1000 meters)(3600 seconds/1 hour)

= 252 kilometer an hour

Distance = Rate * Time

Distance = 252 Kph * 6.5 hours

= 1638 Kilometers

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14y ago

Average speed = (total distance) / (total time)

Total distance = (112 + 182) = 294 km

Total time = (112/79 + 182/100) = 3.2377 hours (rounded).

Average speed = (294 / 3.2377) = 90.805 km/hr(rounded)

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13y ago
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9y ago

To calculate the average speed simply divide the distance by the hours driven. 140 kilometers divided by 2 hours equals 70 kilometers per hour.

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13y ago

The average speed is 70.2 km/h

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Wiki User

9y ago

18.06 meters per second.

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6y ago

Her average speed is... 20 Km/h

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15y ago

42

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12y ago

32 km/h

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Q: Calculate the average speed in km h of a car that drives 140 kilometers in two hours?
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