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Physics, 24.03.2020 20:42 okok111

Cory said his science textbook down on the roof of his car as he was getting in, and he forgot it there. As he was driving at 30 mph, his car suddenly crashed and very quickly came to a stop. Assuming that the force of friction on the book is negligible, what was the speed of the science textbook the moment after the crash?

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