Two bullets are fired horizontally and simultaneously towards each other from rooftops of two buildings 100 m apart and of same height of 200 m, with the same velocity of 25 m/s. When and where will the two bullets collide? (g = 10 m/s 2 )
Text Solution
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Given that,
Distance between two building, d = 100 m Height of each building, h = 200 m
Initial peed of bullet fired from each building, u = 25 m/s
Let bullets collide at time t
x 1 + x 2 = 100 m
25t + 25t= 100
t= 2s
= 20m
h = 200-20= 180m
Hence bullets will collide after 2 s at height 180 m above the ground.
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