answer unsolved problems and show work

The two masses m and M are attached by a light rod. The masses slide and rotate as they move along a frictionless surface. M Vcm M M 15. Graph the velocity of the center of mass as a function of time. (4 points) 16. Explain your reasoning for your graph. (4 points) Because heine- o so the velocity as co Now suppose some external force in the negative x direction. 17. Graph the velocity of the center of mass as a function of time. (4 points) 18. Explain the reasoning for your graph. (4 points) pg. 5