A 2kg flat disc with radius 1m and moving at 2 m/s accelerates to 4 m/s. How much work was done to it? The moment of Inertia for a flat disc is
1=1/2mr^2

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom