Two rocks, one of mass 30 kg and the other of mass 60 kg, are separated by a distance of 1.0 m. They exert a gravitational force on each other of magnitude F. Which other pair of rocks exert a force of magnitude F on each other? A. a rock of mass 100 kg and a rock of mass 18 kg, separated by 1.0 m
B. two rocks, each of mass 45 kg, separated by 1.5 m
C. two rocks, each of mass 45 kg, separated by 1.0 m
two rocks, each of mass 60 kg, separated by 2.0 m

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

Energy is the ability to do work which measures what

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts. ki k i = nothing ev request answerprovide feedback