Landraamileey Landraamileey

14-12-2016
Mathematics

contestada

A hockey puck slides off the edge of a table with an initial velocity of 20.0 m/s. The height of the table above the ground is 2.0m. What is the magnitude of the velocity of the puck just before it touches the ground? Show your solution.

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nobillionaireNobley nobillionaireNobley

18-12-2016

v^2 = u^2 + 2gs = 20^2 + 2(9.8)(2) = 400 + 39.2 = 439.2
v = sqrt(439.2) = 21.0 m/s

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