Posted by **ami** on Sunday, August 22, 2010 at 6:22pm.

VECTOR A has a magnitude of 55. Ax is 26. What are the two possibilities for Ay?

- PHY -
**bobpursley**, Sunday, August 22, 2010 at 6:30pm
well, A can point in the +x,+y direction, or +x,-y direction.

The angle between A and the x axis will be

theta=arccos 26/55

and Ay= +-55sinTheta

- PHY -
**Henry**, Sunday, August 22, 2010 at 6:39pm
(26)^2 + Y^2 = (55)^2

676 + Y^2 = 3025

Y^2 = 3025 - 676 = 2349,

Y = +- 48.47.

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