Physics for IGCSE & O level - Forces And Motion (Section 1 - No. 32)
What does the centripetal force do to an object in circular motion?
It speeds it up.
It slows it down.
It changes the direction of its velocity.
It causes it to move in a straight line.
Giải thích
Centripetal force changes the direction of the velocity, keeping the object moving in a circle.