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Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 27 August 2021, Shift 2, Physics Q4

Question 4 of 90 in this shift, Physics question 4 of 30, Section A.

A player kicks a football with an initial speed of 25 ms−1\mathrm{ms^{-1}} at an angle of 45∘45^\circ from the ground. What are the maximum height and the time taken by the football to reach at the highest point during motion ? (Take g=10 ms−2g=10\ \mathrm{ms^{-2}})
  1. (1)hmax=10 m  T=2.5 sh_{max}=10\ \mathrm{m}\ \ T=2.5\ \mathrm{s}
  2. (2)hmax=15.625 m  T=3.54 sh_{max}=15.625\ \mathrm{m}\ \ T=3.54\ \mathrm{s}
  3. (3)hmax=15.625 m  T=1.77 sh_{max}=15.625\ \mathrm{m}\ \ T=1.77\ \mathrm{s}Official answer
  4. (4)hmax=3.54 m  T=0.125 sh_{max}=3.54\ \mathrm{m}\ \ T=0.125\ \mathrm{s}

Official answer

Option 3

NTA final key.

Chapter
Motion in a Plane
Topic
Projectile Motion
Idea tested
Ground-to-Ground Parameters

Same idea in other shifts

Asked 19× in all
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  2. 4 Apr 2026, Shift 2 · Q47A gun mounted on the ground fires bullets in all directions with same speed. The farthest distance the bullets could reach is 6.4 m. The…EasyNumerical value
  3. 3 Apr 2025, Shift 1 · Q29The angle of projection of a particle is measured from the vertical axis as ϕ\phi and the maximum height reached by the particle is…MediumDiagram basedHas a figure
  4. 3 Apr 2025, Shift 2 · Q27A particle is projected with velocity uu so that its horizontal range is three times the maximum height attained by it. The horizontal…MediumSingle correct
  5. 7 Apr 2025, Shift 1 · Q31Two projectiles are fired from ground with same initial speeds from same point at angles (45∘+α)(45^\circ + \alpha) and (45∘−α)(45^\circ - \alpha)…MediumSingle correct
  6. 8 Apr 2025, Shift 2 · Q30Two balls with same mass and initial velocity, are projected at different angles in such a way that maximum height reached by first ball…MediumSingle correct
  7. 8 Apr 2024, Shift 2 · Q32The angle of projection for a projectile to have same horizontal range and maximum height is :EasySingle correct
  8. 6 Apr 2023, Shift 1 · Q47Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : When a body is…EasyAssertion–reason

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.