A man pushes on a trunk with a force of 250 newtons. The trunk does not move. How much positive work is done on the trunk?

zero. Work is force x distance. d is zero, force x zero = zero.

Positive work is done when there is a displacement in the direction of the applied force. In this case, since the trunk is not moving, there is no displacement in the direction of the force.

Therefore, the positive work done on the trunk is equal to zero.

To calculate the positive work done on an object, we need to use the formula: work = force * distance * cos(theta), where force is the magnitude of the applied force, distance is the distance over which the force is applied, and theta is the angle between the force and the direction of motion.

However, in this case, since the trunk does not move, it means that there is no displacement, or distance, in the direction of the applied force. Therefore, the work done is zero.

In other words, if the trunk remains stationary despite the force applied, no work is done on the trunk.