Is rest mass the same as rest energy? Physics AS level

Is it? or is it?

Also how would I calculate the rest mass of a neutral pion using values from the data sheet?

Rest energy is technically 0, mass can never be zero

Is it? or is it?

Also how would I calculate the rest mass of a neutral pion using values from the data sheet?

Does your data sheet have the rest energy of a neutral pion on it? Otherwise, there's no way of calculating that without a fair bit of additional info.

Can you post the exact question and/or a photo of the relevant bit of your datasheet?

$E_rest = m_rest c^2$

Does mass=energy??

Ah, you can use E = mc^2 but I have no idea how to use it..
I assume you make rest energy = mass * speed of light in a vacuum ^ 2
i.e. for a neutral pion, 134.972*10^6= rest mass * (3.00*10^8)^2
so rest mass can be calculated

lol i don't even know enough about physics(even though i take it for A level) to answer this.

I think the theoretical answer is yes because that's how photons have no mass but carry energy?
but for your exam let's just say they're not xD

Hahah i guess we're both learning xD

I think photons are a special case that E=mc^2 doesnt apply to

Hahah i guess we're both learning xD

I think photons are a special case that E=mc^2 doesnt apply to

Ah, you can use E = mc^2 but I have no idea how to use it..
I assume you make rest energy = mass * speed of light in a vacuum ^ 2
i.e. for a neutral pion, 134.972*10^6= rest mass * (3.00*10^8)^2
so rest mass can be calculated

This is correct.