Question

why the body must accelerate when an unbalanced force acts on it

Answer 1

When unbalanced forces act on a body then it makes a resultant that work is done and that and this work done makes him to bring in kinetic energy so this kinetic energy make the body to accelerate

Answer 2

Explanation:

• 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.