⏱️
Exam Countdown: JEE Main 2026
×
✅ Notes download problem fixed!
Download Now →
App
Explore
PYQs
Discuss
Journal
Log in
Play Store
📱
Get App
🔍
Explore
📚
PYQs
💬
Discuss
📓
Journal
🔐
Log in
Get App on Play Store
© 2026 JeeHub. All rights reserved.
Q.) A man can swim in still water with a speed of 2 m/s. If he wants to cross a river of water current speed √3 m/s along the shortest possible path, then in which direction should he swim?
[A]
At an angle 120° to the water current.
[B]
At an angle 150° to the water current.
[C]
At an angle 90° to the water current.
[D]
None of these
[A] At an angle 120° to the water current.
[B] At an angle 150° to the water current.
[C] At an angle 90° to the water current.
[D] None of these
Submit
Two Dimensional Motion 📚
1
Rain is falling vertically downwards with a speed of 4 km/h. A girl moves on a straight road with a ...
2
Ship A is travelling with a velocity of 5 km/h due east. The second ship is heading 30° east of nort ...
3
A boat is sent across (perpendicular) a river with a velocity of 8 km/h. If the resultant velocity o ...
4
A man is walking on a road with a velocity of 8 km/h. Suddenly rain starts falling. The velocity of ...
5
Rain is falling vertically with a velocity of 25 m/s. A woman rides a bicycle with a speed of 10 m/s ...
6
A small body is dropped from a rising balloon. A person A stands on ground, while another person B i ...
7
A policeman moving on a highway with a speed of 30 km/h fires a bullet at a thief's car speeding awa ...
8
A bird is flying towards north with a velocity of 40 km/h and a train is moving with a velocity of 4 ...
9
A river is flowing from west to east at a speed of 5 m/min. A man on the south bank of the river, ca ...
10
A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest p ...
11
A boat is moving with a velocity 3i + 4j with respect to the ground. The water in the river is movin ...
12
A car is moving towards east with a speed of 25 km/h. To the driver of the car, a bus appears to mov ...
13
A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h ...
14
A train of 150 m length is going towards north direction at a speed of 10 m/s. A parrot flies at a s ...
15
A boy can swim in still water at 1 m/s. He swims across a river flowing at 0.6 m/s which is 336 m wi ...
16
A man can swim in still water with a speed of 2 m/s. If he wants to cross a river of water current s ...
17
A plank is moving on the ground with a velocity v and a block is moving on the plank with a velocity ...
18
A car is going south with a speed of 5 m/s. To a man sitting in the car, a bus appears to move towar ...
19
A truck is moving with a constant velocity of 54 km/h. In which direction (angle with the direction ...
20
A river flows with a speed more than the maximum speed with which a person can swim in still water. ...
21
Rain, driven by the wind, falls on a railway compartment with a velocity of 20 m/s, at an angle of 3 ...
22
The ratio of the distance carried away by the water current, downstream, in crossing a river, by a p ...
23
A particle is moving in a circle of radius r centered at 0 with a constant speed v. What is the chan ...
24
A particle is projected with a velocity v so that its range on a horizontal plane is twice the great ...
25
During a projectile motion, if the maximum height equals the horizontal range, then the angle of pro ...
26
A particle is projected from the ground at some angle with the horizontal. Let P be the point at max ...
27
The point from where a ball is projected is taken as the origin of the coordinate axes. The x and y ...
28
In the above problem, what is the angle of projection with the horizontal? ...
29
A particle is fired with velocity u making angle θ with the horizontal. What is the change in veloci ...
30
A ball is thrown upwards at an angle of 60° to the horizontal. It falls on the ground at a distance ...
31
Range of a projectile is R, when the angle of projection is 30°. Then, the value of the other angle ...
32
A projectile will cover the same horizontal distance when the initial angles of projection are ...
33
A javelin is thrown at an angle θ with the horizontal and the range is maximum. The value of tan θ i ...
34
A shot is fired from a point at a distance of 200 m from the foot of a tower 100 m high so that it j ...
35
Two bullets are fired horizontally with different velocities from the same height. Which will reach ...
36
A person can throw a stone to a maximum distance of h metre. The maximum distance to which he can th ...
37
The path of one projectile as seen by an observer on another projectile is a/an ...
38
The maximum height reached by a projectile is 4 m. The horizontal range is 12 m. Velocity of project ...
39
A ball thrown by one player reaches the other in 2 s. The maximum height attained by the ball above ...
40
Galileo writes that for angles of projection of a projectile at angles (45° + α) and (45° - α), the ...
41
At the top of the trajectory of a projectile, the acceleration is ...
42
A projectile is thrown at an angle of 40° with the horizontal and its range is R1. Another projectil ...
43
A projectile has a time of flight T and range R. If the time of flight is doubled, what happens to t ...
44
At the uppermost point of a projectile, its velocity and acceleration are at an angle of ...
45
A ball is thrown from a point with a speed Vo at an angle of projection θ. From the same point and a ...
46
An airplane moving horizontally with a speed of 180 km/h drops a food packet while flying at a heigh ...
47
A gun fires two bullets at 60° and 30° with the horizontal. The bullets strike at some horizontal di ...
48
A body is projected at an angle of 30° with the horizontal and with a speed of 30 m/s. What is the a ...
49
A grasshopper can jump a maximum distance of 1.6 m. It spends negligible time on the ground. How far ...
50
The maximum height attained by a projectile is increased by 5%. Keeping the angle of projection cons ...
51
A body has an initial velocity of 3 m/s and has an acceleration of 1 m/s² normal to the direction of ...
52
When a particle is thrown horizontally, the resultant velocity of the projectile at any time t is gi ...
53
Two tall buildings are 30 m apart. The speed with which a ball must be thrown horizontally from a wi ...
54
A shell fired from the ground is just able to cross horizontally the top of a wall 90 m away and 45 ...
55
Two paper screens A and B are separated by 150 m. A bullet pierces A and B. The hole in B is 15 cm b ...
Get App on Play Store