Final answer:
In this case, Mrs. Clark does 375 Joules of work in pushing the box 5 meters across the floor.
Step-by-step explanation:
To calculate the work done by Mrs. Clark in pushing the box, we can use the formula:
Work = Force x Distance
In this case, the force applied by Mrs. Clark is 75 N, and the distance the box is pushed is 5 meters. Plugging these values into the formula, we get:
Work = 75 N x 5 meters
Multiplying 75 N by 5 meters gives us the work done by Mrs. Clark, which is:
Work = 375 Joules
Therefore, Mrs. Clark does 375 Joules of work in pushing the box 5 meters across the floor.