7. An object of mass m-2.0 kg, moving with a velocity of v-12.0 m/s collides head-on with a stationary object whose mass is my-6.0 kg. The collision is elastic. What are the velocities of the two objects after the collision? Neglect friction. (Note: there are two unknowns here. Elastic collision means that you have 2 conservation equations to use: conservation of momentum and conservation of mechanical energy. You can also use conservation of momentum along with another equation involving relative velocities; finish and look at the geogebra simulation to find this third relationship). Before (Ptotal=+24 kg m/s) After V=? V=12m/s m = 2kg m= 2kg V=0 m=6kg m=6kg V=?