Question

A boat heading north crosses a wide river with a velocity 15 km/h relative to the water. The river has a uniform velocity of 8 km/h due east. Determine the boat's velocity with respect to the shore.

(Choose the nearest answer)



9 km/h, 50degree



17 km/h, 62degree



39 km/h, 40degree
v east = 8
v north = 15
|v| = sqrt(64 + 225) = 17
angle clockwise from north = cos^-1 15/17 = 31
angle counterclockwise from east (landlubber math way) = 90 -31 = 59

Related Questions

a boat heading due north crosses a wide river with speed of 12km/h relative to the water the water i... A boat is heading due north as it crosses a wide river with a velocity of 10km/hr relative to the wa... A river flows due East at 1.14 m/s. A boat crosses the river from the South shore to the North sho... A boat heading north crosses a wide river with a velocity 15 km/h relative to the water. The river h...