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4 A particle is projected from ground with speed 80 mls at an angle 30° with horizontal from ground. Themagnitude of average velocity of particle in timeinterval t 2 s to t 6 s is [Take g 10 m/s21(1) 40/2 m/s(2) 40 m/s(3) Zero(4) 40 3 m/s |
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