Four persons K, L, M and N are initially at rest at four corners of a square of side d. Each person now moves with a uniform speed v in such a way that K always moves directly towards L, L directly towards M, M directly towards N and N directly towards K. Show that the four persons will meet at time t =
Text Solution
Verified by ExpertsThe correct answer is:
D
Initial distance between any two person = d
Considering KL,
Velocity component of L along LK,
v cos 90 0 = 0
Thus speed between K and L is v
∴ ∴ time t = d/v.
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