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toy dart gun

In compressing the spring in a toy dart gun , 0.5 J of work isdone.When the gun is fired, the spring gives its potential energyto a dart with mass of .02 kg.(a) What is the dart's kinetic energy as it leaves thegun?(b) What is the dart's speed?
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Answer #1
becuase of conversatin of energy, kinetic energy of gun issame as work done in compressing the spring assuming no energylosskinetic energy is 0.5 joulekinetic energy of gun is 0.5 m v ^2m is mass of dartv is velocity of dart0.5*0.02*v^2=0.5 meter per secondv=(0.5/(0.02*0.5))^1/2
answered by: lynnae
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