Chang sees the following formula on a website about
what does the symbol ef in the formula indicate that chang
needs to do?
he needs to find the net force acting on the object in a
direction.
he needs to use only forces acting in the direction of
motion.
he needs to combine the horizontal and vertical forces.
he needs to multiply the horizontal and vertical forces.

Can someone explain to me how to do this problem ?

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

Hunter’s velocity was 4.5 m/s. at the end of his race, his velocity was the same. which best describes his movement? his movement stopped. his acceleration is zero. his time was constant. his acceleration was positive.