A man can swim in still water with a speed of 2 m s - 1 . If he wants to cross a river with water current speed 3 m s - 1 along the shortest possible path, then in which direction should he swim?

At an angle 150 ° to the water current.

At an angle 120 ° to the water current.

At an angle 90 ° to the water current.

HARD

NEET

IMPORTANT

Earn 100

A man is crossing a river flowing with velocity of $5 m s^{- 1}$ . He reaches a point directly across at a distance of $60 m$ in $5 s$ . His velocity in still water should be

50% studentsanswered this correctly

Important Questions on Motion in a Plane

HARD

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 123

A boat which has a speed of

5 km h^{- 1}

in still water crosses a river of width

1 km

along the shortest possible path in

15 \min

. The velocity of the river water (in

km h^{- 1}

) is

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 124

For four particles

A, B, C

and

D

, the velocities of one with respect to others are given as,

\vec{V_{D C}}

20 m s^{- 1}

towards north,

\vec{V_{B C}}

20 m s^{- 1}

towards east and

\vec{V_{B A}}

20 m s^{- 1}

towards south. Then

\vec{V_{D A}}

HARD

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 125

A man crosses the river perpendicular to river flow in time $t$ seconds and travels an equal distance down the stream in $T$ seconds. The ratio of the man's speed in still water to the speed of river water will be

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 126

Rain is falling vertically downwards with a velocity of

3 km h^{- 1}

. A man walks in the rain with a velocity of

4 km h^{- 1}

. The raindrops will appear to be falling on the man with a velocity of

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 127

An aeroplane takes off from Mumbai to Delhi with the velocity

50 km h^{- 1}

in north-east direction. The wind is blowing at

25 km h^{- 1}

from north to south. What is the resultant displacement of the aeroplane in

2 h

EASY

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 128

A boat is moving with a velocity

3 \hat{i} + 4 \hat{j}

with respect to the ground. The water in the river is flowing with a velocity

- 3 \hat{i} - 4 \hat{j}

with respect to the ground. The velocity of the boat relative to the water is

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 129

A boy can swim in still water at

1 m s^{- 1}

. He swims across a river flowing at

0.6 m s^{- 1}

which is

336 m

wide. If he travels in the shortest possible time, then what time does he take to cross the river?

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics I NEET>Chapter 4 - Motion in a Plane>TOPICWISE QUESTIONS>Q 130

A man can swim in still water with a speed of

2 m s^{- 1}

. If he wants to cross a river with water current speed

\sqrt{3} m s^{- 1}

along the shortest possible path, then in which direction should he swim?

A man is crossing a river flowing with velocity of 5 m s-1. He reaches a point directly across at a distance of 60 m in 5 s. His velocity in still water should be

Important Questions on Motion in a Plane

Learn and Prepare for any exam you want !

A man is crossing a river flowing with velocity of $5 m s^{- 1}$ . He reaches a point directly across at a distance of $60 m$ in $5 s$ . His velocity in still water should be