The average momentum of a runner can be calculated by dividing the mass (in kg) of the runner by the time taken to cover the distance (in seconds). This gives the average momentum of the runner during that time period.
3 seconds of light in vacuum means a distance of 899377374 m. 100 seconds of sound in air of a temperature of 20°C or 68°F means a distance of 34300 m. Light covers a much longer distance.
2.1
6.021 m/second
The car's average speed is 1/2 of (0 + 60) = 30 miles per hour.At 30 miles per hour, the car covers 396 feet in 9 seconds.
No. Velocity = distance divided by time. Example: a body covers 100 metres distance in 10 seconds velocity = 100 / 10 = 10 m/s
Just divide the distance by the time.
Instantaneous speed is the speed at a particular moment in time.The average speed of an object tells you the (average) rate at which it covers distance
If a car travels at a constant speed of 80m/s, then it covers the distance of 1,400m in exactly 17.5 seconds, no longer and no shorter. If the time is not 17.5 seconds, then either the distance was not 1,400m, or else the car's speed was not constant at 80m/s. Or both.
Since the athlete covers 200m in 40 seconds, the velocity is 5 m/s. In 140 seconds, the displacement is 700m in the same direction. The total distance covered will be the sum of the distance traveled in each segment of time, so it will be 200m + 700m= 900m.
Distance = Rate * Time Or, in this case Time = Distance/Rate Time = 19 miles/40 mph = 0.475 * 60 = 28.2 minutes 28.5 minutes (60 seconds/1 minute) = 1718 seconds ----------------------
Average speed = distance/time = 20 metres per second.