A mass m = 2kg has an initial kinetic energy K = 9J.  The mass is under a constant force F = 1N. and moves from X(0) = 2 to X(tf) = 18m at a terminal time tf. Find the work done (W) by the force, the kinetic energy (K(tf)), and, the initial speed (v1 at X(0)) and the terminal speed ( v2 at X(tf)) of the mass at the terminal time

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