A child picks a ball up from the ground, then places it on a table. The ball rolls on the table's surface. Which statement is true?
A- The ball has both kinetic and potential energy,
B- The ball does not have kinetic or potential energy
C- The ball has kinetic energy but no potential energy.
D- The ball has potential energy but no kinetic energy

Which pair below describes isotopes of the same element? a) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons b) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons c) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons d) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons