16.1 mph
To calculate the runner's average speed, you would use the formula: speed = distance ÷ time. In this case, the distance is 100 meters and the time is 15 seconds. Therefore, the average speed of the runner would be 100 meters ÷ 15 seconds = 6.67 meters per second.
375 meters/per minute
About 365.5 meters a minute.
66⅔ meters per minute.
50
The average speed of a runner who runs 500.0 m in 1.3 min is 6.41 m/s.
9 hours
The answer depends on the distance for the race. A marathon runner could not maintain the speed attained by a sprint runner.
The average speed of the runner is 1500m/(180 + 49.67) seconds = 6.531 m/s or 13 knots.
Magnitude of average acceleration = (change of speed) divided by (time for the change)Average 'A' = (6 - 4) / 20 = 2/20 = 0.1 meter per second2-- That's the average over the 20 seconds. We don't know anything about thevalue of the acceleration at any particular instant during the 20 seconds.-- We're working entirely with scalars ... speed, not velocity, and magnitude ofacceleration ... since we don't know anything about the runner's direction atany time during the whole event.
3 km in 5 min => his average speed is 36 km in 60 min, that is 36 km per hour. Clearly an extremely fast runner and way faster than MY average speed.
Assuming the runner maintains his average speed for an hour, 3 kilometres in 30 minutes is equal to 6 kilometres per hour.