Describe a situation in which the gravitational potential energy of an object is negative. Will everyone agree that it is negative? Can an object have negative kinetic energy?
2007-02-13 01:19:18 · 2 answers · asked by clars 1 in Science & Mathematics ➔ Physics
2 magnets with both positive or both negative poles pointing towards each other is as close as I can come.
Energy is energy no matter if it is pushing or pulling.
2007-02-13 01:33:44 · answer #1 · answered by Anonymous · 0⤊ 0⤋
One could assign a vector to energy and thus it could have direction and a sign. In kinetic energy, it is the velocity of the object that gives it energy and certainly that is a vector quantity. As to gravity, can we use vectors there as well? If we assign down to be toward the earth, then the moon's pull on us must have the opposite sign. When it is overhead. I need some aspirin.
2007-02-16 20:56:16 · answer #2 · answered by ZORCH 6 · 0⤊ 0⤋