Question

A body of mass 5 kg moving with velocity of 10 find the ratio of initial and final kinetic energy if (a)its mass is doubled and (b)its velocity made 3 times

Answer 1

m1=5kg v1=10m/s
m2=10kg v2=30m/s
1/2*5*10*10=1/2*10*30*30
ans=1:18