742.5742 meters/sec 9000meters/12.12sec x .00062137miles/1meter x 60sec/1min x 60min/1hr = 1660.9miles/hr Sorry, miles per hour is probably the units you wanted. Here's meters/sec AND miles/hr.
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4 meters/2 seconds = 2 meters/second.
40 meters/10 seconds = 4 meters per second.
ok
If a car travels 200 meters in 10 seconds what is the speed of the car
130.909kph