Wolfram Alpha says it's approximately _one-sixth_ the kinetic energy of a mosquito in flight
I'm pretty sure I could feel one sixth of a mosquito hit me, because I've been pelted by much smaller gnats before!
(It does depend on where, of course.)
In a similar vein a 20 gallon fishtank and a small bathtub are approximately the same despite that I can't actually fit in the 20 gallon fishtank myself.