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Question

Two particles of equal mass m are projected from the ground with speeds v1 and v2 at angles θ1 and θ2 as shown in the figure. Given θ2>θ1 and v1cosθ1=v2cosθ2. Which statement/s is/are correct?
168703_d313e7afec6c4c0f9a4aab01e0fa146f.PNG

A
Centre of mass of particles will move along a vertical line.
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B
Centre of mass of particles will move along a line inclined at some angle with vertical.
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C
Particle '1' will be above centre of mass level when both particles are in air.
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D
Particle '2' will be above centre of mass level when both particles are in air.
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Solution

The correct options are
A Centre of mass of particles will move along a vertical line.
D Particle '2' will be above centre of mass level when both particles are in air.
1945404_168703_ans_9c58a8866afc4cb78131c76e35e25e43.jpg

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