question_answer

A body travels a distance of 15 m from A to B and then moves a distance of 20 m at right angle to AB. The displacement of the body will be

A) 15m                                         

B) 25m

C) 35m                                         

D) 40m

Correct Answer: B

Solution :

[b] As per question, it can be shown as

The displacement is the shortest path

between initial and final position.

\[\therefore \]  Displacement =AC = \[\sqrt{A{{B}^{2}}+C{{B}^{2}}}\]

= \[\sqrt{{{15}^{2}}+{{20}^{2}}}\]= 25 m