If an object with a mass of #2 kg # changes speed from #6 m/s# to #5 m/s#, by how much does its kinetic energy change?

1 Answer
sjc
Mar 6, 2018

#11J#

Explanation:

change in KE#=1/2mv_2^2-1/2mv_1^2#

#=>Delta KE=1/2m(v_2^2-v_1^2)#

#Delta KE=cancel(1/2xx2)(6^2-5^2)#

#Delta KE=36-25=11J#

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