A 130 m-wide river flows due east at a uniform speed of 2.2 m/s. A boat with a speed of 7.9 m/s relative to the water leaves the south bank pointed in a direction 38 degrees west of north. What is
a. The boat's speed relative to the ground
b. The time it takes for the boat to reach the opposite bank
c. The distance downstream the boat will land from its starting point
d. The angle at which the boat's velocity vector points relative to the river's bank