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A smooth square platform ABCD is moving towards right with a uniform speed v.  At what angle θ  must a particle be projected from A with speed u so that it strikes the point B.  
 

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By Expert Faculty of Sri Chaitanya
a
sin-1uv
b
cos-1vu
c
cos-1uv
d
sin-1vu
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detailed solution

Correct option is B

When the relative velocity along horizontal will be zero, ie, ucosθ=v                  cosθ=vu


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