What is the average speed in meters/second?
2006-09-05 19:26:14 · 6 answers · asked by JJ L 1 in Science & Mathematics ➔ Other - Science
872.5 m / s
2006-09-05 19:38:05 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Most wrong answers on top!
It is true, however, that this is a trick question!
E = V * t -> distance = speed times time.
So, the speed is equal to the distance divided by the time it takes, or V = E / t.
The average speed is NOT the average OF the speeds!
You have to calculate to TOTAL time it takes to do the trips, and this is
t1 = 571,000 / 698 ~= 1469sec
t2 = 571,000 / 1047 ~= 545sec
To do the whole round trip, the plane took t1 + t2 or 2014sec
and the total distance equals twice the 571km or 1142000m
So the AVERAGE SPEED = total distance / total time or
V = 1142000 / 2014 = 567 m/sec...
2006-09-06 06:13:07 · answer #2 · answered by just "JR" 7 · 0⤊ 0⤋
Please check the answer below posted by: just "JR"
He is correct & my answer is incorrect
At first glance, this looks like a
Distance = Rate * Time (D = RT) type of problem, but it's a trick question!
The key to recognizing this is that the D always remains the same, 571 km or 571,000 m.
Since the D is the same, it's just a matter of averaging the two Rs that are given:
(698 m/s + 1047 m/s) / 2 = 872.5 m/s
2006-09-06 03:11:26 · answer #3 · answered by mrb9z 4 · 0⤊ 1⤋
The average speed of this problem is (698+1047)/2
2006-09-06 02:35:11 · answer #4 · answered by sunseekerrv 3 · 0⤊ 1⤋
837.6 meters/sec
2006-09-06 03:11:44 · answer #5 · answered by M1976 2 · 0⤊ 1⤋
is it a question ?????
2006-09-06 02:36:33 · answer #6 · answered by cool_dude 2 · 0⤊ 1⤋