You let go of a 0.3kg ball from a height of 2m. When the ball bounces off the ground, it loses 15% of its energy as sound. What is the velocity of the ball right before it hits the ground? What is the velocity of the ball right after it hits the ground?  How much energy does the ball lose during the

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A: Comment:Please submit a new question specifying the one you'd like answered.

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