Practice 4

2 Animated Videos | 18 Structured Questions.

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74

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

#Intermediate
75

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

#Intermediate
76

Prove the given relation.

#Intermediate
77

Net velocity of the man with respect to ground?

#Intermediate
78

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

2 Min | 5MB #Intermediate
79

Find value of U1 - U2.

#Intermediate
80

What is the speed of the river flow ?

#Intermediate
81

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

3 Min | 4MB #Intermediate
82

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

#Intermediate
83

What should be the value of _ ?

#Intermediate
84

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

#Intermediate
85

Prove the given relation.

#Intermediate
86

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

#Intermediate
87

Find the time for the complete journey.

#Intermediate
88

Total time for the journey is ?

#Intermediate
89

Ratio of the times of flight in two cases ?

#Intermediate
90

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

#Intermediate
91

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?

#Intermediate
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