A particle is projected from ground with speed 80 ml s at an angle 30° with horizontal from ground. The
magnitude of average velocity of particle in time
interval t = 2 s to t= 6 s is [Take g = 10 m/s
(1) 40√2 m/s
(2) 40 m/s
(3) Zero
(4) 40√3 m/s
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