True.
When the motion of an object is perpendicular to the direction of the applied force, the work done by that force is zero. This is because work is calculated as the product of the force and the displacement in the direction of the force (W = F × d × cos(θ)), where θ is the angle between the force and the direction of motion. If θ is 90 degrees (perpendicular), then cos(90°) = 0, resulting in zero work done.