Thursday
July 24, 2014

Homework Help: Astronomy

Posted by Isabelle on Tuesday, October 19, 2010 at 4:23pm.

We can calculate the kinetic energy of any moving object with a very simple formula: kinetic energy = 1/2 mv^2 ,where m is the object's mass and v is its velocity or speed. Table Energy Comparisons shows that metabolizing a candy bar releases about 10^6 joules.

A- How fast must the candy bar travel to have the same 10^6 joules in the form of kinetic energy? (Assume the candy bar's mass is 0.2 kilogram.)

B- Is your answer faster or slower than you expected?

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