JEE Main 2021PhysicsMotion In One DimensionMediumMCQ

JEE Main 2021 — Motion In One Dimension Question with Solution

JEE Main 2021 (16 Mar Shift 2)

Question

A mosquito is moving with a velocity v→=0.5t2i^+3tj^+9k^ m s-1 and accelerating in uniform conditions. What will be the direction of mosquitoes after 2 s ?

Choose an option

Show full solutionCorrect option: B
Correct answer
Btan-1856 from y-axis

Step-by-step explanation

Given :
v→=0.5t2i^+3tj^+9k^

v→at t=2=2i^+6j^+9k^

∴ Angle made by direction of motion of mosquito will be,

cos-1211 (from x-axis) =tan-11172

cos-1611 (from y-axis) =tan-1856

cos-1911 (from z-axis) =tan-1409

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Motion In One Dimension chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2021, covering the Motion In One Dimension 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.