A 85.0 kg skateboarder starts from rest at the top of a hill 300. meters in length at an angle of 7.00 degrees. The wheels and the air produce 70.0 N of friction. Find the speed of the skateboarder at the bottom of the hill. a Answer value

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

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

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?