Que significa NABCH y en donde lo podemos aplicar? es para un examen de emprendimiento y cosas asi

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.