JEE Main 2018 — Motion In Two Dimensions Question with Solution
JEE Main 2018 (15 Apr Shift 2 Online)
Question
A man in a car at location Q on a straight highway is moving with speed . He decides to reach a point in a field at a distance from highway (point ) as shown in the figure.Speed of the car in the field is half to that on the highway. What should be the distance RM, so that the time taken to reach is minimum?
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Let the car turn of the highway at a distance ' ' from the point . So, And if speed of car in field is , then time taken by the car to cover the distance on the highway,
Time taken to travel the distance ' in the field
Total time elapsed to move the car from to
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This is a previous-year question from JEE Main 2018, covering the Motion In Two Dimensions chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.