Question

what is the effect of unbalanced force on a body​

Answer 1

Answer:

If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion.

Answer 2

Answer:

when the net force is not 0 on a body

we say that the body is experiencing a unbalanced force.

by using Newtons second Law of motion ,

F =  ma

the body will have an acceleration

hence the body will start moving with a constant acceleration