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Uniform Circular Motion

The position ...

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The position of a particle along a straight line is given by s=(t^3 -9t^2+15t)m, where t is in seconds.(1) Velocity of the particle changes its directionfirst time at t =2 s(2) Velocity of particle changes its direction second time at t =3 s(3) The distance travelled by the particle in 0-6s is 46 m(4)The average velocity of the particle in 0-6s in -3ms^{-1}

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