A ball undergoes an elastic collision with a vertical wall. Which of the following is equal to zero?
Question
A ball undergoes an elastic collision with a vertical wall. Which of the following is equal to zero?
Solution
The change in the total kinetic energy of the ball is equal to zero in an elastic collision. This is because in an elastic collision, kinetic energy is conserved. The ball's speed before and after the collision remains the same, although its direction changes. Therefore, the change in kinetic energy, which is 1/2 * mass * (final speed^2 - initial speed^2), is zero.
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