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Form the top of a tower of height 78.4 m, two stones are projected horizontally with 20 ms-1 and 30 ms-1 in opposite directions. On reaching the ground. their separation is

a
100 m
b
200 m
c
50 m
d
400 m

detailed solution

Correct option is B

Separation between them R1+R2.U12hg+U22hg=2hg(20+30)=200m.

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