Physics · Work, Energy and Power

A point mass has a velocity v = (1.0 m/s)î + (3.0 m/s)ĵ at a certain instant. At the same instant, it experiences a force F = -(2.0 N)î + (4.0 N)ĵ + (5.0 N)k̂. The power delivered by the force at that instant is:

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