Nobject moves in a circular path at a constant speed. what is the relationship between the directions of the object's velocity and acceleration vectors?

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? ab c d

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.