Vectors: Let V1 = -6.2i+8.2j and V2 = 4.3j+(-4.9)j

Find |v1 + v2| and |V2-V1|

Question

Vectors: Let V1 = -6.2i+8.2j and V2 = 4.3j+(-4.9)j

Find |v1 + v2| and |V2-V1|

anonymous · Answer

For this problem, I would just take the magnitude of both i and j components and then take the magnitude of both of those answers right?

anonymous · Answer

You take each individual component, sum, find the resultant vector, and take its absolute value.

amistre64 · Answer

|v1|+|v2| not= |v1+v2|  unless v1 is parallel in some way to v2

anonymous · Answer

Yes, what he said.

anonymous · Answer

okay so  far V1, i got 10 for its magnitude, and for V2 I got 6.5 for its.

anonymous · Answer

*for

amistre64 · Answer

those are pointless magnitudes since the sum or difference of the vectors is what we want to magnitudalfy

amistre64 · Answer

magnitificate?

anonymous · Answer

Magnificify.

amistre64 · Answer

V1 = < -6.2, 8.2> V2 = <4.3, -4.9> ----------------- just add them first or subtract as the case may be then square add sqrt for |...|

anonymous · Answer

ok so its sqrt((-1.9)^2+(5.3)^2) = 5.63

anonymous · Answer

sorry that 5.3 should be a 3.3, so the answer would be 3.80