How much work does a person do in pushing a box with a force of 10 n over a distance of 4.0 m in the direction of the force?

There's an equation that says work = force * distance * cos (theta)

Theta being the angle between the surface and the object.

So, since the direction is the same as that of the force, you can say that theta is equal to zero.

Cos (0) = 1

So, W = (10) * (4) * (1) = 40 Joules

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.