2007-04-04 01:12:20 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Geography
how do you get 90?
Can you tell me?
2007-04-04 01:25:23 · update #1
If the travel was done from point zero.
20 Km East, then 20 Km West + 70 Km west
110 Km total distance traveled.
But if 20 Km East, and from that point 70 Km West:
20+70 = 90
2007-04-04 01:33:53 · answer #1 · answered by ? 5 · 0⤊ 0⤋
20-70=-50
the distance is 50 km West
2007-04-04 13:35:29 · answer #2 · answered by cool IITian 3 · 0⤊ 0⤋
50 km West.
2007-04-04 08:20:16 · answer #3 · answered by dlfield 3 · 0⤊ 1⤋
Distance travelled does'nt depend on direction.
So distance=90km.
However Displacement= 50km west
Whenever we talk of a vector like displacement, we consider direction also. Thats why I specify west when i say 50 km.
2007-04-04 08:43:35 · answer #4 · answered by ♠ Author♠ 4 · 0⤊ 0⤋
Distance travelled 90 km irrespective of directions.
displacement/change in position = 50 km west of starting point
it's the old physics conundrum - distance is scalar - just add them up, irrespective of direction
Displacement (change of position) is a vector quantity - it has both length and angle from the starting point
Some scalar quantities include: distance, speed
Some vector quantities include: displacement (change in position), velocity (direction matters), accleration, force, momentum....
2007-04-04 08:41:43 · answer #5 · answered by big_george 5 · 0⤊ 0⤋
90 km of course !
2007-04-04 08:20:58 · answer #6 · answered by javornik1270 6 · 0⤊ 1⤋
110 km total distance
20 km east....20km back to zero point...then 70km west
2007-04-04 08:22:00 · answer #7 · answered by dowserdave 2 · 0⤊ 0⤋
90 km of traveling without petrol or fuel
2007-04-04 08:21:02 · answer #8 · answered by Joshua C 1 · 0⤊ 1⤋