Electric motor

Could you recommend an electric motor, it needs to be able to drive a 3kg kart 2m in under 3 seconds. Also, it will be powered by a 9V battery.

Thanks

I cant come up with any motor that can do that. As far as I know the theoretical power consumption is easily over what a standard 9 volt battery can do alone.

If it were to charge up a big enough set of capacitors it may be able to do it.

More info would be very helpfull!

Pine box derby rail gun? <snicker>