All Flashcards
What is position?
Where an object is located.
What is displacement?
The change in position; a vector quantity.
What is velocity?
The rate of change of position; a vector quantity.
What is acceleration?
The rate of change of velocity; a vector quantity.
What is centripetal acceleration?
Acceleration directed towards the center of a circular path.
What is centripetal force?
The net force causing centripetal acceleration, directed towards the center of the circle.
What is the center of mass (COM)?
The average position of all the mass in a system.
In uniform circular motion, what direction is the velocity vector?
The velocity vector is always tangent to the circular path.
In uniform circular motion, what direction is the centripetal acceleration vector?
The centripetal acceleration vector is always directed towards the center of the circle.
What is the effect of a net force acting towards the center of a circular path?
It causes centripetal acceleration, resulting in uniform circular motion.
What happens when the radius of a circular path increases, assuming constant speed?
The centripetal acceleration decreases.
What happens to the center of mass when external forces act on a system?
The center of mass accelerates as if all the mass is concentrated there and all external forces act on that point.
What happens when the velocity of an object in UCM increases?
The centripetal acceleration increases.