Light Mass, Momentum, Energy

P=mvIf it is true how can light have P i.e. momentum 0+without m i.e. mass =0. Thenlight shold have 0 momentum and 0 energy by E=mc^2 + pc
- Sandeep Kumar Dash (age 12)
kalpakkam, Tamil Nadu, India

This is a question we get very frequently. I'm surprised you didn't find the answer:  .

There is one important comment to make on your question. The correct equation is

E²=(m₀c²)²+p²c², not the one you gave.

Mike W.

(published on 07/05/2015)