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JEE Main · 2023 · 01 Feb 2023 · Shift 2 · Kinematics

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For a body projected at an angle with the horizontal from the ground, choose the correct statement.
  1. (A)Gravitational potential energy is maximum at the highest point.✓ Correct
  2. (B)The horizontal component of velocity is zero at highest point.
  3. (C)The vertical component of momentum is maximum at the highest point.
  4. (D)The kinetic energy (K.E.) is zero at the highest point of projectile motion.

Answer: (A)

Solution

At the highest point of a projectile only the vertical velocity vanishes; the horizontal velocity stays constant, so the kinetic energy is not zero and the vertical momentum is zero there. The height, however, is greatest at that point, so the gravitational potential energy reaches its maximum. The correct statement is that the gravitational potential energy is maximum at the highest point.

JEE Main · 2023 · 01 Feb 2023 · Shift 2 · Single correct option

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