Relative Motion
Boat velocity 4 m/s north, current 3 m/s east. Resultant speed magnitude is:
Select the correct option:
Solution
5 m/s
The boat's resultant velocity vr is the vector sum of its velocity in still water and the river current velocity. Since North and East are perpendicular: vr=vnorth2+veast2 vr=42+32=16+9=25=5 m/s.
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About This Question
- Subject
- physics
- Chapter
- kinematics
- Topic
- relative motion
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
5 m/s
The boat's resultant velocity vr is the vector sum of its velocity in still water and the river current velocity. Since North and East are perpendicular: vr=vnorth2+veast2 vr=42+32=16+9=25=5 m/s.
This easy difficulty physics question is from the chapter kinematics, covering the topic of relative motion. It appeared in the 2025 exam.
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