q and r are at rest at the vertices of an equilateral triangle of side s. Each of the particle starts moving with constant speed v m s ^-1. P is moving along PQ
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Three particles p, q and r are at rest at the vertices of an equilateral triangle of side s. Each of the particle starts moving with constant speed v m s ^-1. P is moving along PQ, Q along QR and R along RP. The particle will meet each other at time t given by [...]