What is the kinetic energy of an object with a mass of # 15 kg# that has been in freefall for # 9 s#?

1 Answer
anton
Oct 12, 2016

#E_k=5424J#

Explanation:

#E_k=(mv^2)/2#
#v=gt#
#E_k=(15*(9,8*9)^2)/2=5424J#

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