1. **State the problem:** Calculate the work done by a force of 2.4 N pushing a sandwich across a table 0.75 m wide. 2. **Identify the given values:** - Force, $F = 2.4$ N - Distance, $d = 0.75$ m - Mass of sandwich, $m = 400$ g (not directly needed for work calculation as work depends on force and distance) 3. **Recall the formula for work:** $$ W = F imes d imes \cos(\theta) $$ Assuming the force is applied in the direction of movement, $\theta = 0$ degrees, so $\cos(0) = 1$. 4. **Calculate work:** $$ W = 2.4 \times 0.75 \times 1 = 1.8 \, \text{Joules} $$ 5. **Final answer:** The work done by the force pushing the sandwich is $1.8$ Joules.