Please see the attachment
We know that Newton's first low of motion:
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
A force is a push or a pull. A force can give energy to an object causing the object to start ...
The solution provides a detailed explanation for why an object in motion stays in motion until it comes into contact with an opposite greater or equal force.