Which experiment would you perform to determine if the total momentum is conserved in a collision? Collide two objects of known masses, and measure the velocity of one object before the collision and the other object after the collision.
Drop two objects from the same height and measure how long it takes them to reach the ground.
Apply the same amount of force to two objects of different mass, and compare the change in their velocities.

I dont understand what the question is

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

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