A particle is projected with velocity u at angle θ with horizontal at t = 0. What is the magnitude of change in the velocity of the particle when it is at maximum height?

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u cosθ2

u cos θ

u sin θ

none of these

answer is C.

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Detailed Solution

ui = → u cos θi⏞ + u sin θj⏞uf→ = u cos θ i⏞∆u→ = uf→- ui→ = -u sin θj⏞|∆u→| = u sin θ

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