Physics, 14.09.2019 07:30 klocke2001
The position vector of an object of mass 0.5 kg is given by r 2.0t2i+ 3.0tj m where t represents time. which one of the following statements is false when a time of t 2.0 s has elapsed. a) the object has moved a distance of 10 m. b) the momentum of the object is 41+1.5/ kg. m.s c) the kinetic energy of the object is 18 j d) the force on the object acts perpendicular to the direction of the unit vectorj e) the magnitude of the force acting on the object is 4 n
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