Ask Lemmy

radio waves dont have mass but do have relativistic mass. And you didnt clarify whether relativistic mass counted, so I'm going to go with radio waves. They travel at the speed of light. I am the winner. I'd like my nobel prize in literature now.

There’s a dirty joke in here somewhere

The shortest unit of time in the multiverse is the New York Second, defined as the period of time between the traffic lights turning green and the cab behind you honking.

• Terry Pratchett, Lords and Ladies

All every day objects but photons have mass. Maybe also neutrinos.

Neutrinos. About 100 trillion go through you every second with about .000001 percent interacting with you. And they have a non zero mass.

The crack of a whip is a sonic boom caused by the tip going supersonic.

Glass cracks propagate at an absurdly fast rate. Something like 4x the speed of sound (1400m/s). Not a physical thing moving, but very common.

Satellites are visible and move at some km per second. Pretty fast

Inside the atmosphere anything faster than some hundreds km/h get so much drag that they either are extremely small (bullets) or extremely powerful (planes, maglev trains)

That manhole cover.

The air leaving your lungs during a sneeze is moving roughly 100mph.

Mantis shrimp punches travel 12 to 23 meters per second (approximately 27 to 51 miles per hour) in water the acceleration involved can reach up to 10,000 Gs.
The peak force generated by a mantis shrimp’s punch can be as high as 1500 Newtons, which is over 2500 times the animal’s own body weight.
The acceleration of their punch is such thay it creates a cavitation bubble which, when it collapses, can generate 8,500 degrees Fahrenheit – nearly as hot as the sun’s surface at 10,000 degrees Fahrenheit.

We named ours Smeagol.

Me, at the end of any social engagement.

It’s like that episode of Simpsons where they’re filming something at the Simpsons’ house and Homer learns there’s snacks. He suddenly becomes a Homer-shaped cloud of dust.

The crack of a bullwhip is caused by the tip exceeding the speed of sound, around 750 mph/1250 kph.

Not so long ago I would have said electrons in a CRT screen (old school TV). When the electrons leave the accelerating anode, they are traveling at a reasonable fraction of the speed of light

Hmm how about CRT monitors/televisions? Not that common these days but they are basically little particle accelerators that shoot electrons at a pretty good fraction of the speed of light (like 30%). But I guess that's not really an answer to you question unless you define electrons as objects. I guess my other answer would be airbags which deploy at about 300 kmph

Depends on how you define everyday life, but there are currently trillions of Neutrinos flying through you at almost light speed. I think their mass still hasn't been measured. But it's pretty low.

When uncorking a champagne bottle, the gasses inside expand so fast that the white mist it can usually be seen is actually frozen CO~2~