In outer space, where there is no gravity or air, an astronaut pushes with an equal force of 15 N on a 3-kg moon rock and on a 6-kg moon rock.
A) Since both rocks are weightless, they will have the same acceleration.
B) Since both rocks are weightless, they do not push back on the astronaut.
C) The 6 kg rock pushes back on the astronaut twice as hard as the 3-kg rock.
D) Both rocks will push back at the astronaut with 15 N.
E) Since the astronaut is weightless, he cannot push on the rocks.
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