Problem: Use the work-energy theorem to solve each of these problems. You can use Newtons laws to check your answers. Neglect air resistance in all cases.A branch falls from the top of a 95.7-m-tall redwood tree, starting from rest. How fast is it moving when it reaches the ground?A volcano ejects a boulder directly upward 526 m into the air. How fast was the boulder moving just as it left the volcano?
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Problem Details
Use the work-energy theorem to solve each of these problems. You can use Newtons laws to check your answers. Neglect air resistance in all cases.
A branch falls from the top of a
A volcano ejects a boulder directly upward
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Net Work & Kinetic Energy concept. You can view video lessons to learn Net Work & Kinetic Energy. Or if you need more Net Work & Kinetic Energy practice, you can also practice Net Work & Kinetic Energy practice problems.