12. A 15kg rock falls from the top of a building 8m high. Find its PE and KE. (a) when at rest at the top of the building (b) halfway down the ground (c) when. it reaches the ground (d) What is its speed when it reaches the ground?

12. A 15kg rock falls from the top of a building 8m high. Find its PE and KE. (a) when at rest at the top of the building (b) halfway down the ground (c) when. it reaches the ground (d) What is its speed when it reaches the ground?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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*E. A 15kg rock falls from the top of a building 8m high. Find its PE and KE. (a)
when at rest at the top of the building (b) halfway down the ground (c) when
it reaches the ground (d) What is its speed when it reaches the ground?

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