Two bodies of masses m1 and m2 are acted upon by a constant force F for a time t. They start from rest and acquire kinetic energies E1 and E2 respectively. Then E1/E2 is
1
m1 / m2
2
m2 / m1
3
1
4
\(\frac{{\sqrt {{{\rm{m}}_1}/{{\rm{m}}_2}} }}{{{{\rm{m}}_1} + {{\rm{m}}_2}}}\)