The velocities of the marbles change, so you know that the marbles accelerate. Acceleration is the rate of change of velocity, which is the change in velocity divided by time. To calculate acceleration during a collision, the time is the duration of the collision, which is the same for both objects in the collision. Compare the accelerations of the blue and orange marbles during this collision.
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The velocities of the marbles change, so you know that the marbles accelerate. Acceleration is the r...
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