JAMB - Physics (1991 - No. 4)
An object moves with uniform speed round a circle. Its acceleration has
constant magnitude and constant direction
constant magnitude and varying direction
varying magnitude but constant direction
varying magnitude and varying direction
설명
When an object moves with uniform speed in a circular path, its acceleration (centripetal acceleration) has a constant magnitude but changes direction continuously as the object moves around the circle. This acceleration is always directed towards the center of the circle.