19. A 75-kg piano is hoisted on a crane and delivered through the window of a 6th-story apartment (20
meters above the ground). What is the potential energy of the piano?
20. (ALGEBRA CHALLENGE) The potential energy of a 40-kg cannon ball is 14000 J. How high was the
cannon ball to have this much potential energy?

Question

03-09-2022
Chemistry

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19. A 75-kg piano is hoisted on a crane and delivered through the window of a 6th-story apartment (20
meters above the ground). What is the potential energy of the piano?
20. (ALGEBRA CHALLENGE) The potential energy of a 40-kg cannon ball is 14000 J. How high was the
cannon ball to have this much potential energy?

Sagot :

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