Answered

Hang a pen by a piece of string. Is the pen at rest or in motion?

Sagot :

BookGirlid
I think the pen will be at rest if there are no forces acting on it. A thing is in motion if it is moving. If you just hang a pen, it won't move. But if you pluck the string or move the pen, of course it will be in motion.
Xanelle18id

the pen is at rest because there is no movement because we can only recognize the thing in motion if it is moving