Verified Solution • 2025–26 Session moderate

QJEEM25Ph1fe9: JEE Main 2025 Physics - Class 11 JEEM25Ph1fe9 Solution: A ball of mass 100 g is projected with velocity at with…

A ball of mass 100 g is projected with velocity 20 m/s20 \mathrm{~m} / \mathrm{s} at 60∘60^{\circ} with horizontal. The decrease in kinetic energy of the ball during the motion from point of projection to highest point is

Multiple Choice Options

  • A 20 J
  • B 5 J
  • C 15 J
  • D zero

Step-by-Step Verified Solution

JEE Main 2025 (Online) 22nd January Evening Shift Physics - Motion in a Plane Question 3 English Explanation

ki=12mv2kf=12 m(vcos⁡60∘)2=18mv2Δk=ki−kf=38mv2=38×0.1×400=15 J

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