A jet plane travels from Calgary to Winnipeg, a distance of 1385m, in 2h and 45 mins. Determine the speed of the jet plane in m/s

309.5752 m/s.

First, split the "1385 m" in half, because it takes 2 hours to get that far. So this way, we're turning it into mph (miles per an hour). (If m = miles)

Secondly, turn the mph (miles per an hour) into m/s.

Third, just some calculation, and you're done.