A reference group xyz rotating with respect to another group XYZ having the same origin and it is assumed that it is fixed in a vacuum (that is it is an inertial group) , the angular velocity of xyz group relative to the XYZ group given by w=2t2i the position vector at time t as been observed in xyz group is given by : r=(2t2+t)i-3t2-6t2k calculate : a- apparent velocity  b- the actual velocity

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A reference group xyz rotating with respect to another group XYZ having the same origin and it is assumed that it is fixed in a vacuum (that is it is an inertial group) ,

the angular velocity of xyz group relative to the XYZ group given by w=2t2i

the position vector at time t as been observed in xyz group is given by :

r=(2t2+t)i-3t2-6t2k

calculate :

a- apparent velocity 

b- the actual velocity 

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