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Two boats are moving along perpendicular paths on a still lake at night. One boat moves with a speed of 3ms-1 and the other boat moves with a speed of 4ms-1 in the directions such that they collide after some time. At t = 0, the boats are 300m apart. Two boats will collide after time_________.

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VB,A = 5m/s

t = 300/5 = 60s.

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