A box is moving on a frictionless surface with a certain amount of kinetic energy. it is then pushed in the opposite direction of its motion by an 8 N force until it comes to stop in 4 meters. How much kinetic energy did the box have when the force was first applied?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

What is friction? how does it affect the motion of an object?

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.