i asked this before but i think i may have wrong details
Ship A has position vector (5 i + 9 j) km. Relative to an observer on a second ship B, ship A has position vector (7 i + 10 j) km.
i would like to find out
What is the position vector of ship B? position (km) =
How far is ship B from the origin? distance (km) =
thankyou very much for any help
2006-08-30 20:04:12 · 4 answers · asked by zz06 3 in Science & Mathematics ➔ Mathematics
could you explain how you guys got sqrt(5)
2006-08-30 20:31:25 · update #1
i assume that you are able to get the correct position vector of ship B:
B_vector = -2i - j
the distance is found by using Pythagorean theorem on this position vector.
Distance of B from Origin is:
|B| = sqrt[ (-2)² + (-1)² ]
|B| = sqrt[ 4 + 1 ]
|B| = sqrt(5)
2006-08-30 20:50:46 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The position of ship B is -2i -j
distance = sqrt(4+1) = sqrt(5)
2006-08-31 03:11:41 · answer #2 · answered by Gypsy Catcher 3 · 0⤊ 0⤋
What is the position vector of ship B? position (km) = (5i - 7i + 9j - 10j )
How far is ship B from the origin? distance (km) = sqrt(4+1)
2006-08-31 03:19:43 · answer #3 · answered by gjmb1960 7 · 0⤊ 0⤋
Vector B is -2i - j and is 2.23 units from the origin
2006-08-31 03:18:15 · answer #4 · answered by SAREK 3 · 0⤊ 0⤋