Home
Class 12
PHYSICS
A boat covers certain distance between t...

A boat covers certain distance between two spots on a river taking `'t_(1)'` time, going down stream and `'t_(2)'` time goind upstream, what time will be taken by the boat to cover the same distance in still water:-

Text Solution

Verified by Experts

The correct Answer is:
1
Both horizontal direction speed is same
`v_(0) cos theta=v_(0)/2 rArr cos theta=1/2rArr theta=60^(@)`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PALNE

    ALLEN |Exercise Exercise-05[B]|5 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise MCQ with one or more than one correct Question|1 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise Exercise-04[B]|14 Videos

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JA)|4 Videos

Similar Questions

Explore conceptually related problems

A boat moves along the flow of river between two fixed points A and B. it takes t_(1) time when going downstream and takes t_(2) time when going upstream between these two points. What time it will take in still water to cover the distance equal to AB.

A swimmer takes 4 second in crossing some distance in downstream and taken 6 second in upstream for same distance then find the time taken by him to cover same distance in still water.

A man standing on a moving escalator, completes a certain distance in time t_(1) . If the escalator does not move then man covers this distance in time t_(2) by walking. (i) How much time will he take to cover the same distance if he move on the moving escalator in the same direction ? (ii) How much time will he take to cover the same distance if he move on the moving escalator in the opposite direction ?

Time taken by the particle to reach from A to B is t . Then the distance AB is equal to

A vehicle covers certain distance at constant speed of 20 km h^(-1) in time interval 't' on linear path. Then it covers certain distance at constant speed of 30 km h^(-1) in the same time interval. What is the average speed of the vehicle ?

An electron of mass m_(e ) initially at rest moves through a certain distance in a uniform electric field in time t_(1) . A proton of mass m_(p) also initially at rest takes time t_(2) to move through an equal distance in this uniform electric field.Neglecting the effect of gravity, the ratio of t_(2)//t_(1) is nearly equal to

A boat covers 32 km upstream and 36 km downstream in 7 hours. Also, it covers 40 km upstream and 48km downstream in 9 hours. Find the speed of the boat in still water and that of the stream.

A river 4.0 miles wide is following at the rate of 2 miles/hr. The minimum time taken by a boat to cross the river with a speed v=4 miles/hr (in still water) is approximately

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55km down-stream. Determine the speed of the stream and that of the boat in still water.