JEE Advanced 2023 · Paper 1 · one or more correct

JEE Advanced 2023 Physics question on Work Energy and Power

A slide with a frictionless curved surface, which becomes horizontal at its lower end, is fixed on the terrace of a building of height 3h3h from the ground, as shown in the figure. A spherical ball of mass mm is released on the slide from rest at a height hh from the top of the terrace. The ball leaves the slide with a velocity u⃗0=u0x^\vec{u}_0 = u_0\hat{x} and falls on the ground at a distance dd from the building making an angle θ\theta with the horizontal. It bounces off with a velocity v⃗\vec{v} and reaches a maximum height h1h_1. The acceleration due to gravity is gg and the coefficient of restitution of the ground is 1/31/\sqrt{3}. Which of the following statement(s) is(are) correct?
  1. A.
    u⃗0=2gh x^\vec{u}_0 = \sqrt{2gh}\,\hat{x}
  2. B.
    v⃗=2gh(x^−z^)\vec{v} = \sqrt{2gh}(\hat{x} - \hat{z})
  3. C.
    θ=60∘\theta = 60^\circ
  4. D.
    d/h1=23d/h_1 = 2\sqrt{3}
Show answer

Correct options: A, C, D

[JEE Advanced 2023 · Paper 1]

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