Question

1. Any part of a force that does not act in the direction of an object’s
motion does no on an object.
2. You calculate work by multiplying the force acting in the direction
of by the distance the object moves.

Answer 1

1. work

2. motion (or more precisely: the displacement)

Completed: "Any part of a force that does not act in the direction of an object’s motion does no work on an object. You calculate work by multiplying the component of the force acting in the direction of the motion (the displacement) by the distance the object moves."

Formula: W = F‖ · d = F cosθ · d.