When you multiply (2.2500x10^3) x (3.00 x10^5) =675,000,000 report this answer to decimal using scientific notation
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Average speed of the runner is the rate at which the runner covers the total distance. Average speed of the runner in the race is given by,
Average speed =
Where
Total distance = Distance covered by the runner from initial to final position
Total time = time taken by the runner to cover entire distance
Instantaneous speed is the speed of the runner at the particular moment in the given time. Instantaneous speed is given by,
Instantaneous speed =
x = position of the runner at time t
t = time taken to cover distance x
Hence, Average speed and instantaneous speed are different for a runner running in the race.