Help with Physical Science! I have to do this discussion on potential and kinetic energy. The example of the problem is a 4 pound weight being lifted from the ground on a string. There are also scissors there to cut the string for the 4 pound to drop. The two questions is to explain how the object (the weight on the string) had potential energy. And how the object had kinetic energy. THANK YOU

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.