19. Two people of unequal mass are initially standing still on the ice with negligible friction. They then simultaneously push each other horizontally. Afterward, which of the following is true? *

Question

-The center of mass of the two person system moves in the direction of the less massive person.
-The momenta of the people are of equal magnitude.
-The less massive person has a smaller initial acceleration than the more massive person.
-The kinetic energies of the two people are equal.
-The speeds of the two people are equal.

Answer 1

the momenta is the same in both direction. Newton's third law.