3. Vectors

The figure shows vectors $\stackrel{\rightharpoonup }{A}$ and $\stackrel{\rightharpoonup }{B}$. What are the x and y components of $\stackrel{\rightharpoonup }{A}$?

A toy gun shoots a plastic ball $10\mathrm{m}/\mathrm{s}$ at an angle of 25° above the horizontal. What is the vertical component of the ball's velocity when it left the gun?

If the vector $\stackrel{\rightharpoonup }{E}$ shown in the figure has components $E_x=3.0$ and $E_y-1.3$, what is θ?