Question: Explain $e=mc^2$ on why humans can't travel at light speed
1. The problem is to understand why humans cannot travel at the speed of light using the equation $$e=mc^2$$.
2. The formula $$e=mc^2$$, derived by Einstein, shows the equivalence of energy ($e$) and mass ($m$) with $c$ being the speed of light in vacuum.
3. Important rule: As an object moves faster, its relativistic mass increases, requiring more energy to continue accelerating.
4. To reach the speed of light, an infinite amount of energy would be needed because mass would become infinite.
5. Humans have rest mass, so accelerating to light speed is impossible as it would require infinite energy.
6. Therefore, the equation explains that no object with mass can reach or exceed the speed of light.