JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 26 July 2022, Shift 2, Physics Q33

Question 33 of 90 in this shift, Physics question 3 of 30, Section A.

A ball of mass 0.15 kg hits the wall with its initial speed of

12\ \text{ms}^{-1}

and bounces back without changing its initial speed. If the force applied by the wall on the ball during the contact is 100 N, calculate the time duration of the contact of ball with the wall.

(1)0.018 s
(2)0.036 sOfficial answer
(3)0.009 s
(4)0.072 s

Official answer

Option 2

NTA final key.

Chapter: Laws of Motion
Topic: Newton's Laws of Motion
Idea tested: Momentum Formulation (F = dp/dt)

Same idea in other shifts

Asked 7× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.