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A force F= (3.14t)i+ 6.28j + (1.57t^2)k N acts on a mass of 0.785 kg in...

A force F= (3.14t)i+ 6.28j + (1.57t^2)k N acts on a mass of 0.785 kg in space, with initial velocity v= 7.21i + 9.76j + 3.25k (m/s). At t = 1.71 s, (a) What are the magnitude and direction of the acceleration? (relative to +z axis) (b) What are the magnitude and direction of the velocity? (relative to +y axis) (c) What are the magnitude and direction of the displacement? (relative to +x axis) (d) The angle between the velocity and the acceleration vector.

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