A 320-kg object has a velocity 560 ihatbold

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A 3.20-kg object has a velocity (5.60 ihatbold - 1.80 jhatbold) m/s. (Note: From the definition of the dot product, v2 = varrowbold · varrowbold.)

(a) What is its kinetic energy at this moment?

(b) Find the net work done on the object if its velocity changes to (8.00 ihatbold+ 4.00 jhatbold) m/s.

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