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(b) Only the kinetic energy of the system s W (c) Only the momentum of the system is conserved Problems: Solve the problem and show your work. (No solution, no points). Please write ONLY ONE SOLUTION. Take g= 10 m/s when appropriate P1. (4 Points) An object of mass 2.0 kg moves along the x-axis subjected to a single force F acting in the in the figure. If at t-1 the positive-x direction, whose magnitude as a function of time is shown elocity of the object is 1.5 m/s in the negative x direction, find its velocity at te33 F ON) 12t →t(s)
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Answer #1

Area under force time graph gives change in momentum

So ½×(3-1)×12 = m(v-(-1.5))

12 = 2(v+1.5)

v = 4.5 m/s towards +x direction

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