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a hammer falls off a roof and strikes the ground with a certain kinetic energy. If it fell from a roof twice as tall, how ouwld its kinetic energy compare? Explain.
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a hammer falls off a roof and strikes the ground with a certain kinetic energy. If it fell from a roof twice as tall, how ouwld its kinetic energy compare? Explain.

User Krishna Srihari
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If it starts from twice the height, then it has twice the potential energy up there. This means it'll have twice the kinetic energy when it hits the ground.

User Dominic Goulet
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