A spacecraft is launched from the surface of Mars, with a velocity of 0.5c along the positive xaxis. Another spacecraft is moving past with velocity...

A spacecraft is launched from the surface of Mars, with a velocity of 0.5c along the positive xaxis. Another spacecraft is moving past with velocity 0.8c, heading at an angle of 30◦ below the negative x-axis, in the x-y plane, as seen by observers on Mars. Find the magnitude and direction of the velocity of the second spacecraft as measured by the pilot of the first spacecraft