There are two masses depicted, and there is a small explosive charge that can cause them to separate. Initially the masses are both at rest. You can specify the final velocity for one of the two masses (and then the other velocity is constrained by the conservation of Energy and conservation of Momentum). Choose the mass values you want, and then pick one of the final velocities, and run the animation. (The arrow buttons near the initial values will double or half the values.)
What is the velocity of the center of mass of the two carts after the spring is released. Answer : Zero!
With equal masses, when you pick one mass's final velocity, how does that affect the other mass's velocity?. Answer : It is the same!
If M1 is larger than the M2, how does its V1F compare to V2F?. Answer : Smaller .. and larger if M1<M2!
Note: In this animation .. we force one of the final velocities, the other one is determined by the conservation of momentum. But, we don't consider how much energy is needed in the "explosion" between the masses. If you want to select the KE of the explosion, try the momenta2e physlet.
Related Physlets :
Conservation of Momentum - Energy to Separate (momenta1)
Setting the Explosion energy between two masses (momenta2e)
Conservation of Momentum - 2 Mass Elastic Collision (momenta3)
Conservation of Momentum - 2 Mass Inelastic Collision (momenta3c)
Conservation of Momentum - 2 Mass Inelastic Collision - Center of Mass Technique (momenta4)
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