Purposes 1) To confirm that linear momentum is conserved in two-dimensional coll

Question

Purposes 1) To confirm that linear momentum is conserved in two-dimensional collisions 2) To show that kinetic energy is nearly conserved in two-dimensional near-elastic collisions. Required Equipment and Supplies Collision ramp, 2 steel balls, one plastic or alass ball, metal hose clamp, plumb line, meter stick, B large sheets of paper, carbon paper large enough to cover the paper sheets, bal- ance accurate to 0.01 grams, T-square or other drafting tools. Discussion: In any collision the linear momentum is conserved. A typical case is shown in the figure below. di stance 1+2 r sum of the Note that the final momenta is equal to the initiol momentum. In the example we have drawn, the collision occurs ina although the extension to three dimensions is not too hard to visu- alize. If the collision is perfectly elastic, then the kinetic energy is also conserved. In our present experiment, the balls collide at the end of a ramp and fall onto the floor where their impact posi- tions are marked with carbon paper as shown in the picture on the right. rronl to Page OLA

Explanation / Answer

Yes, the experiment confirmed the conservation of momentum. The product of mass and velocity remains same for initial and final conditions, both in the axes. This shows that momentum is conserved in two-dimensional collision.

The collision is near elastic and the experiment confirms that the kinetic energy is nearly conserved, which is in line with the theory. Hence the kinetic energy is also conserved in two-dimensional collision.

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