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? Physics Work and Energy Energy 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# Answer link Related questions How do matter and energy interact? Question #50ca2 Question #242cf Question #5038d Question #50391 What is potential energy? Question #d6576 Question #50cae Question #50cb2 Question #50cb6 See all questions in Energy Impact of this question 1328 views around the world You can reuse this answer Creative Commons License