Question

Plz urgent do ques 2(1,4) part

Answer 1

Law of inertia : it states that unless act upon by an external force,an object remains rests it countinous to move in a straight line with constant speed.
Law of conservation of momentum : for a collision occuring between object 1 and object 2 in an isolated system, total momentum of two objects before the collision is equal to the total momentum of the two objects after the collision