2 Animated Videos | 18 Structured Questions.

Time to cross the river to reach a point on the other bank, directly opposite to starting point?

% time saved by crossing the river in the shortest possible time?

Prove the given relation.

Net velocity of the man with respect to ground?

Find the minimum ratio of speed of boat to water current needed.

Find value of U1 - U2.

What is the speed of the river flow ?

Find 'vw' to reach a point right across the river.

At what angle _ from the perpendicular to river should man row ?

What should be the value of _ ?

Min speed relative to water to reach directly to point B?

Angle made by the head of airplane with line AB will be equal while going from A to B and from B to A.

Find the time for the complete journey.

Total time for the journey is ?

Ratio of the times of flight in two cases ?

Ratio of the speed of wind to the speed of airplane wrt wind?

Time an aeroplane having velocity v takes to fly around a square with side d if the wind is blowing at a velocity u along one side of the square?