Question

help me fast plzzzzz

Answer 1

weight of the train=5000 N

=>  mg=5000                  

=>      m=5000/10   =>    mass=500 kg

kinetic energy=1/2(mv^2)=10 kj

=>    1/2(500)(v)(v)=10000 j

=>                    v(v)=40   => v= 6.32 m/s

please mark my answer as brainliest.....please feel free to ask doubts to me