Motion in a Plane

JEE Main 2025 (Online) 23rd January Evening ShiftMCQEasy📈 Topic in 37% papers+4−1

Ques. 1JEE Main 2025, 23 January (Evening Shift)

A ball having kinetic energy KE, is projected at an angle of 60 from the horizontal. What will be the kinetic energy of ball at the highest point of its flight?

(KE)2
(KE)8
(KE)4
(KE)16

Answer

(3) (KE)4

Solution

Only gravity acts, so the horizontal velocity u 60 never changes; at the top the vertical part is zero.

[figure]

vtop=u 60 = u2 top= 12m u24= KE4

Answer: (3)

Keep practising — Motion in a Plane

Ques. 2JEE Main 2025, 22 January (Morning Shift)

A particle is projected at an angle of 30 from horizontal at a speed of 60 m/s. The height traversed by the particle in the first second is h0 and height traversed in the last second, before it reaches the maximum height, is h1. The ratio h0:h1 is . [Take, g=10 m/s2 ]

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All JEE Main Physics chapters

Class 11Units and Measurements Motion in a Straight Line Motion in a Plane Laws of Motion Work, Energy and Power System of Particles and Rotational Motion Gravitation Mechanical Properties of Solids Mechanical Properties of Fluids Thermal Properties of Matter Thermodynamics (Physics)Kinetic Theory Oscillations Waves

Class 12Electric Charges and Fields Electrostatic Potential and Capacitance Current Electricity Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves Ray Optics and Optical Instruments Wave Optics Dual Nature of Radiation and Matter Atoms Nuclei Semiconductor Electronics Experimental Skills (Physics)