Question

Two mass are 2gm and 4gm are moving with equal kinetic energy Ratio of their velocities is :

Answer 1

we know that,
KE = 1/2 mv²
given,
KE1 = KE2
(1/2)(M1)(V1²)=(1/2)(M2)(V2²)
2(V1²)=4(V2²)
(V1/V2)²=4/2
V1/V2=√2