A ferry is crossing a river. The ferry is headed due north with a speed of 4.8 m/s relative to the water. If the river's velocity is 2.1 m/s east, what will the ferry's velocity be relative to an on-shore observer? Select one:

a.5.2 m/s at 24° E of N
b. 4.9 m/s at 28° E of N
c. 4.9 m/s at 62° E of N
d. 5.2 m/s at 28° E

a straight line sloped

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

i think it would be 5