A body is displaced from to along the -axis

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A body is displaced from x=4 mx=4\text{ m} to x=2 mx=2\text{ m} along the xx-axis. For the forces in Column I, match the corresponding work done in Column II.
Column IColumn II
(a) F=4i^\mathbf{F}=4\hat{i}(p) Positive
(b) F=4i^−4j^\mathbf{F}=4\hat{i}-4\hat{j}(q) Negative
(c) F=−4i^\mathbf{F}=-4\hat{i}(r) Zero
(d) F=−4i^−4j^\mathbf{F}=-4\hat{i}-4\hat{j}(s) W=8W=8 units

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