Two forces, of magnitudes F1 = 65.0 N and F2 = 50.0 N , act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. (Figure 1)Initially, the center of the block is at position xi = -3.00 cm . At some later time, the block has moved to the right, and its center is at a new position, xf = 6.00 cm .

1.Find the work W1 done on the block by the force of magnitude F1 = 65.0 N as the block moves from xi = -3.00 cm to xf = 6.00 cm

2.Find the work W2 done by the force of magnitude F2 = 50.0 N as the block moves from xi = -3.00 cm to xf = 6.00 cm .

3. What is the net work Wnet done on the block by the two forces?

4.Determine the changeKfKi in the kinetic energy of the block as it moves from xi = -3.00 cmcm to xf = 6.00 cm