In compressing the spring in a toy dart gun, .5 J of work is done. When the gun is fired, the spring gives its?

In compressing the spring in a toy dart gun, .5 J of work is done. When the gun is fired, the spring gives its potential energy to a dart with a mass of .02 kg. What is the dart's kinetic energy as it leaves the gun? What is the dart's speed?|||0.5 = 1/2 x 0.2 x v^2





sqrt((2x0.5)/0.2) = velocity