Jim is reclining on a couch when his brother asks him to play basketball. Jim says he doesn't have any energy.
Which explains in scientific terms why this is not a true statement?
A. Jim actually has potential energy (PE) because of his position. As Jim stands up, moving against the pull of gravity, he will increase his potential energy. Once he begins to walk, some of this PE will be converted to KE, the energy of motion.
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b. Jim actually has kinetic energy (KE) because of his position. As Jim stands up, moving against the pull of gravity, he will increase his kinetic energy. Once he begins to walk, some of this KE will be converted to PE, the energy of motion.
c. Reclining on the couch changed Jim's shape giving him elastic kinetic energy. Standing up will again change his shape, increasing his elastic KE. Once he begins to walk, some of this elastic KE will be converted into gravitational potential energy (PE).
d. Reclining on the couch changed Jim's shape, giving him elastic potential energy. Standing up will again change his shape, increasing his elastic PE. Once he begins to walk, some of this elastic PE will be converted into gravitational kinetic energy (KE).