Question

while driving vehicle how the use of safety belts prevent accidents?To show that body remains at rest unless acted upon by an unbalanced force, mention one situation from every day life

Answer 1

As you have said the Newton's law, here is one example -
The cycle remains at rest until you give a force to make it move.

Answer 2

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.