NEET2015Physics-Motion in a Plane
NEET 2015 Physics Relative Velocity MCQ Question
Type: MCQ-numerical-Medium-Class 11
A ship A is moving westwards with a speed of 10 km h⁻¹ and a ship B 100 km south of A, is moving northwards with a speed of 10 km h⁻¹. The time after which the distance between them becomes shortest, is
A
0 h
B
5 h
C
5√2 h
D
10√2 h
Correct Answer
Option A
Detailed Explanation
The shortest distance occurs when the relative velocity vector is perpendicular to the line joining the ships. Solving the relative motion equations gives the time.
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