What is happening between points

a-b? point a and point b are examples of potential energy, there is not energy transformation taking place here.

point a is demonstrating kinetic energy, as the roller coaster moves downhill the kinetic energy is transformed into potential energy.

point a and point b are examples of kinetic energy, there is not energy transformation taking place here.

point a is demonstrating potential energy, the potential energy is then transformed into kinetic energy as the coaster moves downhill.

What is the rate of change in a objects position?

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p