KinematicsHard
Question
A river is flowing west east at a speed of 5 meters per minute. a man standing on the south bank of the river , capable of swimming at 10 meters per minute in still water, wants to swim across the river the shortest time He should swim in which direction : -
Options
A.Due north
B.30o east of north
C.30o north of west
D.60o east of north
Solution
For shortest time to cross, velocity should be maximum towards north as river velocity does not take any part to cross.
Create a free account to view solution
View Solution FreeMore Kinematics Questions
A small sphere of radius 'r' falls from rest in a viscous liquid. As a result, heat is produced due to viscous f...A small ball rolls of the top of a stairway horizontally with a velocity of 4.5 m s-1. Each step is 0.2 m high and 0.3 m...In the figure the ends P and Q of an unstretchable string move downwards with uniform speed v. Mass M moves upward with ...Which of the following is smallest unit...A ball is dropped from the top of a building. The ball takes The ball 0.5 s to fall the 3m length of a window some dista...