After an Elastic Collision of Two Balls,the Kinetic Energies of the Two

question 54

Multiple Choice

After an elastic collision of two balls,the kinetic energies of the two balls are measured to be 12 J and 24 J.What can be said about the kinetic energy of the two balls before the collision?

• A)nothing-not enough information is given
• B)the balls had the same energies,12 J and 24 J,respectively
• C)the total kinetic energy of the two balls was 36 J
• D)none of the above

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