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Question

A particle P is projected with speed 20 m/s at angle 37o from horizontal as shown in figure. At the same instant Q starts from same point and moves with uniform acceleration towards right. Path of the particle P w.r.t Q is straight line. Acceleration of Q is:
1058885_848fe9bc71224c0d8662988794d7ab68.png

A
40 m/s2
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B
20 m/s2
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C
203m/s2
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D
403m/s2
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Solution

The correct option is D 403m/s2
P to be in straight line with respect to Q the acceleration components perpendicular to the line of particle P should be zero.
asin37=gcos37
a=gcot37=403m/s2

974912_1058885_ans_42a99303dbc34e14b6165a2b272ca008.png

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