A river has a constant current of 3 kilometers per hour. At what angle to a boat dock should a motorboat, capable of maintaining a constant speed of 25 kilometers per hour, be headed in order to reach a point directly opposite the dock? If the river is 7 kilometer wide, how long will it take to cross? 4

A river has a constant current of 3 kilometers per hour. At what angle to a boat dock should a motorboat, capable of maintaining a constant speed of 25 kilometers per hour, be headed in order to reach a point directly opposite the dock? If the river is 7 kilometer wide, how long will it take to cross? 4

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 66P: An experimental jet rocket travels around Earth along its equator just above its surface. At what...

See similar textbooks

Similar questions

A boat is traveling where there is a current of 0.20 m/sm/s east. To avoid some offshore rocks, the boat must clear a buoy that is NNE (22.5)∘ and 2.3 km away. The boat's speed through still water is 2.5 m/s. If the boat wants to pass the buoy 0.16 kmkm on its right, at what angle relative north should the boat head?
A boat travels on a heading of 335o at a constant speed of 28 km/h relative to the water. If the current is 18 km/h with a heading of 60o , what is the velocity of the ship and its bearing?
A boat is traveling where there is a current of 0.20 m/s east. To avoid some offshore rocks, the boat must clear a buoy that is NNE (22.5) ∘ and 2.4 km away. The boat's speed through still water is 2.2 m/s . If the boat wants to pass the buoy 0.19 km on its right, at what angle relative north should the boat head?
A Coast Guard cutter detects an unidentified ship at a distanceof 20.0 km in the direction 15.0° east of north. The shipis traveling at 26.0 km/h on a course at 40.0° east of north.The Coast Guard wishes to send a speedboat to interceptand investigate the vessel. (a) If the speedboat travels at 50.0km/h, in what direction should it head? Express the directionas a compass bearing with respect to due north. (b) Find thetime required for the cutter to intercept the ship.
The operator of a boat wishes to cross a 5-km wide river that is flowing to the east at 10 m/s. He wants to reach the exact point on the opposite shore 15 min after starting. With what speed and in what direction should the boat travel?
A boat crosses a river of width 225 m in whichthe current has a uniform speed of 1.35 m/s.The pilot maintains a bearing (i.e., the direction in which the boat points) perpendicularto the river and a throttle setting to give aconstant speed of 2.92 m/s relative to the water.What is the magnitude of the speed of theboat relative to a stationary shore observer?Answer in units of m/s. How far downstream from the initial positionis the boat when it reaches the opposite shore?Answer in units of m
Check Your Understanding If Trooper runs 20 m west before taking a rest, what is his displacement vector?
An experimental jet rocket travels around Earth along its equator just above its surface. At what speed must the jet travel if the magnitude of its acceleration is g ?
If vector A=[25, 30degrees] and vector B=-6i +14j , then what is the direction of A+B?
A field biologist is studying the migration patterns of northern gannets (a type of seabird). On one particularday, she records that they fly 5.0 km northeast, then turn toward to the south of east by 30 degrees and fly 4.0 kmin the new direction. How far north or south of their original position are the birds?
Determine the direction
Whats the resultant velocity of an airplane that normally flies at 235 lm/h if it encountered a 60 km/h tailwind?