An object that is acceleration can be described as a(n) force. gravity
unbalanced
balanced
physical

Which is the best example of an unbalanced force?

A book resting on a shelf.
A train accelerating away from a station.
A chair sitting motionless.
A car driving at a constant speed.

Which direction will the barrel travel when the farmer applies a downward unbalanced force on the pulley?
up
down
left
no movement