# How much energy is needed to accelerate a Muon to 95 percent the speed of light $c$? [closed]

I would like to know how much energy is required to accelerate a Muon (A quantum particle part of the lepton family). Its mass is 105.7 MeV. I don't have much experience on using the relativity equation (As I am only in grade 9).

## closed as off-topic by DanielSank, JMac, ZeroTheHero, Qmechanic♦Jan 3 '18 at 18:16

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You need to look at the relativistic energy equation. The particle's initial energy is it's rest mass, $E_0$. It's final energy $E_f = \gamma E_0$, where $\gamma$ is a term that pops up all the time in relativity and depends on the velocity.