Part A
Two forces, of magnitudes $F_1 = 95.0 \text{ N}$ and $F_2 = 30.0 \text{ N}$, 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 $x_i = -2.00 \text{ cm}$. At some later time, the block has moved to
the right, and its center is at a new position, $x_f = 1.00 \text{ cm}$.
Find the work $W_1$ done on the block by the force of magnitude $F_1 = 95.0 \text{ N}$ as the block moves from $x_i = -2.00 \text{ cm}$ to $x_f = 1.00 \text{ cm}$.
Express your answer numerically, in joules.
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Figure
$W_1 = 3.8$
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