A ball with a mass of # 3 kg# is rolling at #8 m/s# and elastically collides with a resting ball with a mass of #4 kg#. What are the post-collision velocities of the balls?
1 Answer
The post collision velocities are
Explanation:
In an elastic collision, there is conservation of momentum and conservation of kinetic energies.
Here,
The masses are
and
The initial velocities are
and
Solving for
From
Substituting is
So,
This is the initial conditions.
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