1.

What is the potential energy of a box in (ft)(lbf), kept on a wall having a height 20 ft above the surface?  Assume that the mass of the box is 100 lb.(a) 1000(b) 2000(c) 3000(d) 4000

Answer» Correct answer is (b) 2000

Explanation: PE = mgh, g = 32.2 ft/s2.


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