look at the details!!!?

Question

if someone ran 100 meters in 20 seconds,then ran another 100 meters in 25 seconds,what would the runner's average speed be over the whole 200 meters?

Answer 1

200 meters in 45 seconds = 4.44 m/s

Average speed over 1st 100 >> 100 m/20 s = 5 m/s
Average speed over 2nd 100 >> 100 m/ 25 s = 4 m/s


Note that you cannot average the individual speeds because you'd get 4.5 m/s, which is not correct.

Answer 2

ya. they probably shouldn't say "over the whole 200 meters?"

Answer 3

add em all together & divide by two
200 mts in 45 seconds
average.........100 mts in 22.5 seconds