Kinematics · JEE Advanced previous year questions

2023 2 questions

1. Q182023 · 4 Jun 2023 · Paper 1· One or more correct
   
   1. A.${\vec{u}}_0=\sqrt{2gh}\hat{x}$
   2. B.$\vec{v}=\sqrt{2gh}(\hat{x}-\hat{z})$
   3. C.$\theta =60^{\circ }$
   4. D.$d/h_1=2\sqrt{3}$
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   Answer: A, C, D

2. Q292023 · 4 Jun 2023 · Paper 1· Numerical answer

   A person of height $1.6\mathrm{m}$ is walking away from a lamp post of height $4\mathrm{m}$ along a straight path on the flat ground. The lamp post and the person are always perpendicular to the ground. If the speed of the person is $60\mathrm{cm}{\mathrm{s}}^{-1}$, the speed of the tip of the person's shadow on the ground with respect to the person is ____ $\mathrm{cm}{\mathrm{s}}^{-1}$.

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   Answer: 40