Vector A⃗ has magnitude 4.0m and points to the right; vector B⃗ has magnitude 3.0m and points vertically upward.

Question

Vector A⃗  has magnitude 4.0m and points to the right; vector B⃗  has magnitude 3.0m and points vertically upward.

jfraser · Answer

what's the question?

anonymous · Answer

it asks for the direction of C counterclockwise from A

jfraser · Answer

so what's the vector sum of the two?

anonymous · Answer

it's 5

jfraser · Answer

ok

anonymous · Answer

that's the magnitude

anonymous · Answer

i found the angle but it needs to be in 2 sig figs

jfraser · Answer

so turn 5m into 2 sigfigs. Make the resultant vector "look" just like the vectors used to find it

anonymous · Answer

so 5 is the angle?

anonymous · Answer

its asking for the angle

jfraser · Answer

no, 5m is the resulting straight line displacement. You've been given the legs of a right triangle. find the hypotenuse

jfraser · Answer

and since you know the 3 sides of a right triangle, find the angle that the resultant vector makes with the horizontal axis.