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A car starts down a 22.0 m hill on a roller coaster with a speed of 3.0 m/s. It rolls down to a
height of 2.0 m where it enters a loop with a 10.0 meter radius. Given that no
nonconservative forces are at work here, the speed of the car at the top of the loop will be?

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Answer:

Explanation:

A 0.500 kg block is attached to a unstretched spring on a frictionless plane along the horizontal, and whose force constant is 100 N/m .  A 100 gram play dough ball is rolled with a speed of 6.00 m/s and sticks.  How far does the dough-block system compress the spring?

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