Question

a teacher pushes a bookshelf using force of 10 newtons. if the teacher moved the bookshelf 20 feet how much work did she do?

Answer 1

The work done by the teacher can be calculated using the equation:

work = force x distance x cos(θ)

Here, the force is 10 N, the distance is 20 feet (converted to meters) and the angle between the direction of force and distance is 0 degrees, so cos(0) = 1.

So, work = 10 N x 20 feet x 0.3048 m/foot x 1 = 60.96 J

The teacher did 60.96 joules of work.