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A 75 kg astronaut in space pushes against a 200 kg anvil. When the astronaut lets go of the anvil while pushing it:
a. both astronaut and anvil accelerate in opposite directions at the same rate
b. neither the astronaut nor the anvil will accelerate since net force equals zero
c. both accelerate, but the anvil accelerates more than the astronaut.
d. both accelerate, but the anvil accelerates less than the astronaut

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