Calcium is combined with Nitrogen in a chemical reaction. The formula of the compound created, Calcium Nitride, is

If the speed of a particle triples ,by what factor does its kinetic energy increase?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?