College

The Taipei Tower is a 508-meter, 101-story skyscraper. If you were to toss an orange of 0.13 kg off the top, how much kinetic energy would it have when it hits the sidewalk? Ignore air resistance.

Answer :

Answer:

647.19 J

Explanation:

By the conservation of energy, the potential energy when you toss the orange is converted to kinetic energy when it hits the sidewalk, so

Ef = Ei

KE = PE

KE = mgh

Where m is the mass, g is 9.8 m/s², and h is the height of the Tower. Replacing m by 0.13 kg and h by 508 meters, we get

KE = (0.13kg)(9.8 m/s²)(508 m)

KE = 647.19 J

So, the orange would have 647.19 J of kinetic energy when it hits the sidewalk.

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