Where along the roller coaster track does the rider have the greatest amount of kinetic energy?

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

Hi; /c