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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a
u cosθ2
b
u cos θ
c
u sin θ
d
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