If the speed of a vehicle is increased by `1 ms^(-1)`, its kinetic energy is doubled , then original speed of the vehicle is

A particle of mass m has half the kinetic energy of another particle of mass m/2 . If the speed of the heavier particle is increased by 2 ms^(-1) its new kinetic energy becomes equal to t he original kinetic energy of the lighter particle. The ratio of the orighinal speeds of the lighter and heavier particle is

A particle of mass m has half the kinetic energy of another particle of mass m/2 . If the speed of the heavier particle is increased by 2 ms^(-1) its new kinetic energy becomes equal to t he original kinetic energy of the lighter particle. The ratio of the orighinal speeds of the lighter and heavier particle is

On increasing the speed of a bosy to 2ms^(-1) , its kinetic energy is quadrupled. Then is original speed must be