JEE Main 2022PhysicsMotion In One DimensionMediumMCQ

JEE Main 2022 — Motion In One Dimension Question with Solution

JEE Main 2022 (24 Jun Shift 2)

Question

An object of mass 5 kg is thrown vertically upwards from the ground. The air resistance produces a constant retarding force of 10 N throughout the motion. The ratio of time of ascent to the time of descent will be equal to : [Use g=10 m s-2].

Choose an option

Show full solutionCorrect option: B
Correct answer
B2:3

Step-by-step explanation

Net force while going upward will be mg+R=50+10=60 N

⇒aup=605=12 m s-2

Similarly, Net force while going downward will be mg-R=40 N

⇒ad=405=8 m s-2

Since 

h=12at2⇒auptup2adtd2=1⇒tuptd=812=23

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About this question

This is a previous-year question from JEE Main 2022, 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.