If Something Has No Mass, Can It Have Motion?

[hackett]

There are objects that have no mass ; does it have any meaning to discuss their motion?

[fychan97]

Once again, massless light photons/dunes transfer from source(sunlight, for example) external(to world, for example). danielpauldavis 46 weeks previously Please register to give a supplement. Please confirm your account to give a supplement. Please register to provide a note. Please confirm your account to provide a message.

[moss]

[Beltran]

 Sure, in fact if something has no mass, it HAS to have motion, at the speed of light!   The best example is the humble photon.  No rest mass, therefore it's required to be constantly on the move.      

[Marston]

which behaves both like a particle and like a wave.  As photons collectively make up light(and all electromagnetic energies) they of course move at the speed of light.  Neutrinos are also massless or nearly so, and they move, too.

[Alberto]

Yes but light is considered to have no mass but it acts like a particle as well as a wave. So, I'd have to say...Yes...hao about 300,000 Klm per sec.  lol Sources: rednecksputter, fill-oss-a-fur, inadequate education, read some, been places. skep 46 months ago Please sign in to give a compliment. Please verify your account to give a compliment. Please sign in to send a message. Please verify your account to send a message.

[Arthur]

A massless object can certainly have motion. The best known example is the photon, which behaves both like a particle and like a wave.  As photons collectively make up light(and all electromagnetic energies) they of course move at the speed of light.  Neutrinos are also massless or nearly so, and they move, too. Sources: The Handy Physics Answer Book; any introductory physics book. buymewalt 46 months ago Please sign in to give a compliment. Please verify your account to give a compliment. Please sign in to send a message. Please verify your account to send a message.

[Gorry]

Yes Again, light is the most common item with no physical mass.  For centuries, it was thought that the speed of light was infinite and it travelled instantly from its source to your eye.   Now we know that light travels at a very specific and constant speed, and that speed is fairly important.  It helps defines how our universe works.  So yes, the meaning of the speed of light is very important to physics and astronomy.   I hope this helps.   Manimal 46 months ago Please sign in to give a compliment. Please verify your account to give a compliment. Please sign in to send a message. Please verify your account to send a message.

[Tanjiro]

Again, light is the most common item with no physical mass.  For centuries, it was thought that the speed of light was infinite and it travelled instantly from its source to your eye.   Now we know that light travels at a very specific and constant speed, and that speed is fairly important.  It helps defines how our universe works.  So yes, the meaning of the speed of light is very important to physics and astronomy.   I hope this helps.  

[benon]

So, I'd have to say...Yes...hao about 300,000 Klm per sec.  lol