Question: (a) At a certain instant, a particle-like object is acted on by a force = (4.00 N ) - (2.10 N ) ) +

(a) At a certain instant, a particle-like object is acted on by a force = (4.00 N ) - (2.10 N ) ) + (8.00 N ) while the object's velocity is = - (2.40 m/s) + (3.90 m/s). What is the instantaneous rate at which the force does work on the object? (b) At some other time, the velocity consists of only a y component. If the force is unchanged, and the instantaneous power is -13.0 W, what is the velocity of the object just then? (Give your answer without a unit vector.) (a) Number i Units (b) Number i Units

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