A particle moves on a straight line in such way than it 1 half distance with speed 3m/s and next half distance in 2 equal time intervals with speed 4.5 m/s and 7.5 m/s respectively . Find avearage speed of the particle.
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2v(v1+V2)/V2+v1+2v
2v(v1+V2)/V2+v1+2v2×3(4.5+7.5)/7.5+4.5+2×3
=6(12)/12+6
=72/18
=4m/S2...is your answe
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