- #1
ymehuuh
- 19
- 0
Vector A has a magnitude of 7.90 units and makes an angle of 43.0° counter-clockwise from the positive x-axis. Vector B has a magnitude of 8.00 units and is directed along the negative x-axis.
(a) Find the vector sum vector A + vector B .
Magnitude of vector A + vector B = ? units
Direction of vector A + vector B : ?° counterclockwise from +x-axis
(b) Find the vector difference vector A - vector B .
Magnitude of vector A - vector B : ? units
Direction of vector A - vector B : ?° counterclockwise from +x-axis
My attempt:
Ok, so I find the x and y components of vector A and B which is...
Ax=7.9 cos 43 = 5.778
Ay=7.9 sin 43 = 5.388
Bx=-8
By= 0
Now...I'm not sure what to do next?
(a) Find the vector sum vector A + vector B .
Magnitude of vector A + vector B = ? units
Direction of vector A + vector B : ?° counterclockwise from +x-axis
(b) Find the vector difference vector A - vector B .
Magnitude of vector A - vector B : ? units
Direction of vector A - vector B : ?° counterclockwise from +x-axis
My attempt:
Ok, so I find the x and y components of vector A and B which is...
Ax=7.9 cos 43 = 5.778
Ay=7.9 sin 43 = 5.388
Bx=-8
By= 0
Now...I'm not sure what to do next?