Wednesday

April 23, 2014

April 23, 2014

Posted by **Darlynn** on Monday, December 10, 2012 at 11:52pm.

Upon release, the spring expands accelerating the block from rest. The block scrapes against the inside of the cannon as it’s launched. After launch, the block bounces off the ground 8 times (leaving dents along the way) ultimately coming to a rest 20 meters from the front of the cannon. During the entire ordeal, 50% of the energy went into permanent deformation and 10% went to sound.

- If the final temperature of the block is 0 degrees Celsius, then by what percent has the block melted?

- otherwise, what is the final temperature of the block?

I have no idea how to begin this problem, any help is appreciated!

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