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A 5 kilogram object is thrown vertically upwards with an initial velocity of 25 metres per second from the top of a building 30 metres high. On the way down, the object just misses the edge of the building and strikes the ground. Use the law of conservation of energy to determine the

(a) maximum height above the ground reached by the object, and 

(b) object’s speed just before it strikes the ground. [g= 9.8m/s] 

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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