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Q.

A particle is projected up an inclined with initial speed v = 20 m/s at an angle θ = 300 with the plane. The component of the velocity perpendicular to the plane when it strikes the plane is

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a

103 m/s

b

10 m/s

c

53 m/s

d

data is insufficient

answer is B.

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Detailed Solution

Component of velocity perpendicular to plane remains the same (in opposite direction).usinθ = 20sin300 = 10 m/s

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