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JEE Advanced 2023
Paper-1 2023
Multiple correct answers - Select all that apply
Question
A slide with a frictionless curved surface, which becomes horizontal at its lower end, is fixed on the terrace of a building of height $3 h$ from the ground, as shown in the figure. A spherical ball of mass $m$ is released on the slide from rest at a height $h$ from the top of the terrace. The ball leaves the slide with a velocity $\bar{u}_0=u_0 \hat{x}$ and falls on the ground at a distance $d$ from the building making an angle $\theta$ with the horizontal. It bounces off with a velocity $\overrightarrow{\mathrm{v}}$ and reaches a maximum height $h_1$. The acceleration due to gravity is $g$ and the coefficient of restitution of the ground is $\frac{1}{\sqrt{3}}$. Which of the following statement(s) is(are) correct?
Select ALL correct options:
A
$\overrightarrow{\mathrm{u}}_0=\sqrt{2 \mathrm{gh}} \hat{\mathrm{x}}$
B
$\vec{v}=\sqrt{2 g h}(\hat{x}-\hat{z})$
C
$\theta=60^{\circ}$
D
$\frac{d}{h_1}=2 \sqrt{3}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
⚠ Partially correct. Some answers are missing.
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