It cannot be done. The trip is 60km. The half-way point is at 30 km. At 30km/hr, it takes 1 hour to go half-way. To average 60 km/hr, you would need to make the entire trip in 1 hour. So you have already consumed all your time.
160 meters per minute
Find the distance of the race. Find the cyclist's start time. Find the cyclist's finish time. Elapsed time = Finish time - Start time. Average speed = Distance/Elapsed time.
Average speed = 80 miles per hour.
For the instantaneous value of average velocity, average speed and average velocity are equal.
Distance = time * average speed (velocity) Average speed = Distance/time
by jumping
No, speed can vary and one can still calculate the average speed of an entire trip. Average speed is equal to the change in distance divided by the change in time.
You measure the entire and divide that by the total.
202.5 mph
160 meters per minute
The average speed is the speed that it takes to travel a certain distance in a certain time. Average speed is determined by dividing the distance traveled by the time taken to get there. Instantaneous speed is a certain speed at any given time.
If only total distance and total time are considered, the speed calculated (total distance / total time) is the average speed of the entire trip.
This is a trick question and the only possible answer is "it can't be done". In order to average 40MPH over 20 miles, the entire trip has to last 30 minutes (MPH=miles/hours). At the halfway point, which is 10 miles, at 20MPH it already took 30 minutes to get there, so there is no way to "make up for lost time" - no matter how fast you go, you can't average 40MPH on the trip. Even if you somehow were magically able to travel at the speed of light for the remaining 10 miles, which is 670,616,629MPH, your average speed of the trip would be only 39.999999881MPH, not quite 40MPH.
total distance divided by total time
Total distance divided by total time
You divide the total distance by the total time.
It was (the total distance he covered) divided by (the total time he spent riding).