Skipper Dan is sailing his ship through a swift current. Before entering the current, his ship was moving with a velocity (speed and direction) of vi. The direction of ői is due west, and its speed is 20 km/h.
Now that the ship is in the current, however, it is moving with a velocity 02. The direction of v2 is 40°
south of west, and its speed is 25 km/h.
(Assume "due east" is 0°, "due north" is 90°, and so on.)
What is the speed of the current?
km/h
(Round your final answer to the nearest tenth.)
In what direction is the current flowing?
(Round your final answer to the nearest degree. Your answer should be between 0 and 360°.)
15
个
12