Question

What is the kinetic energy of a 2,000kg boat moving at 5.0m/s

Answer 1

KE=(mv^2)/2 in this case m=2000kg and v=5m/s so

KE=2000*25/2

KE=25000 Joules (a Joule is 1(kg*m^2)/s^2)

Answer 2

KE=1/2MV^2 where M=2000 kg and V=5 m/s .5(2000)*(5^2)=25000 J