The 1.0 kg ball has a velocity of 3.0 m/s after the collision.
The initial kinetic energy of the system is 4.0 J.
The final kinetic energy of the system is also 4.0 J.
In an elastic collision, a 1.0 kg ball moving at 1.0 m/s collides with a 2.0 kg ball moving at −2.0 m/s. The 2.0 kg ball transfers all of its momentum to the 1.0 kg ball.
What velocity does the 1.0 kg ball have after the collision?
What is the initial kinetic energy of the system?
What is the final kinetic energy of the system?
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