Physics for IGCSE & O level - Forces And Motion (Section 10 - No. 32)
Which statement is true for a moving object in a circle?
The object's speed is constant, therefore its velocity is constant.
The object's velocity is constant.
The object is not accelerating
The object is constantly changing direction, therefore accelerating.
Giải thích
An object moving in a circle is constantly changing direction, which means its velocity is changing and it is accelerating.