A Boat, Which Has A Speed Of 5 Km / H In Still Water, Crosses A River Of ...

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A boat, which has a speed of 5km/h in still water, crosses a river of width 1km along the shortest possible path in 15 minutes. What is the magnitude of velocity of the river water?

A5km/hNo worries! We‘ve got your back. Try BYJU‘S free classes today!B4km/hNo worries! We‘ve got your back. Try BYJU‘S free classes today!C3km/hRight on! Give the BNAT exam to get a 100% scholarship for BYJUS coursesD6km/hNo worries! We‘ve got your back. Try BYJU‘S free classes today!Open in AppSolution

The correct option is C 3km/hThe speed of the boat in still water =vb=5km/h Width of the river =s=1km Time taken =t=15 minutes=14h Speed of the boat w.r.t the river =vbr=st=114=4km/h From the definition of relative velocity, we have →vbr=→vb–→vr Hence |→vbr|2=|→vb|2+|→vr|2⇒vr=√(52−42)=3km/h Hence the correct option is (c).

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A boat which has a speed of 5km/hr in still water, crosses a river of width 1km along the shortest possible path in 15 minutes. The velocity of the river water is

Q. A boat, which has a speed of 5 km/h in still water, crosses a river of width 1 km along the shortest path possible in 15 minutes. Then the velocity of the river in km/h is Q. The speed of a boat is 5km/h in still water it crosses a river of width 1km along the shortest possible path in 15minutes. The velocity of the river water is Q. A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/h is:Q. A boat having a speed of 5km/h in still water, crosses a river of width 1km along the shortest possible path in 15 minutes. The speed of the river in km/h :View MoreJoin BYJU'S Learning ProgramGrade/Exam1st Grade2nd Grade3rd Grade4th Grade5th Grade6th grade7th grade8th Grade9th Grade10th Grade11th Grade12th GradeSubmitsimilar_iconRelated VideosthumbnaillockRelative Motion in 2DPHYSICSWatch in Appexplore_more_iconExplore moreRelative Velocity in 2DStandard XII PhysicsJoin BYJU'S Learning ProgramGrade/Exam1st Grade2nd Grade3rd Grade4th Grade5th Grade6th grade7th grade8th Grade9th Grade10th Grade11th Grade12th GradeSubmitbook_imageAI Tutorbook_imageTextbooksbook_imageQuestion Papersbook_imageInstall appCrossIcon

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