45. Review. Two constant forces act on an object of mass m =QiC 5.00 kg moving in the xy plane as shown in Figure P7.45.Force F, is 25.0N at 35.0°, and force F, is 42.0 N at 150°.At time t = 0, the object is at the origin and has velocity(4.00i + 2.50j) m/s. (a) Express the two forces in unit-vectornotation. Use unit-vector notation for your other answers.(b) Find the total force exerted on the object. (c) Find theobject's acceleration. Now, considering the instant t= 3.00 s,find (d) the object'svelocity, (e) its position,(f) its kinetic energyfrom m, and (g) itsF,kineticenergyfrom150Imi + EF - AT. (h) Whatconclusion can you drawby comparing the answersto parts (f) and (g)?35.0°Figure P7.45

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