Answer to Question #163630 in Mechanics | Relativity for Hej

Mechanics | Relativity

Question #163630

A stationary ball drops from the bleachers and reaches the ground at 11m/s. What is the height of the bleachers? Round to the nearest whole number

Expert's answer

By energy conservation law:

"mgh=mv^2\/2"

"h=\\frac{v^2}{2g}=\\frac{11^2}{2\\cdot9.8}=6m"

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