Concept explainers
A 3000-kg spaceship is moving away from a space station at a constant speed of 3 m/s. The astronaut in the spaceship decides to return to the space station by switching on engines that expel fuel so that the sum of the forces exerted on the spaceship by the expelled fuel points toward the space stateion. What is the magnitude of the minimum force needed to bring the spaceship back to the space station?
a. 9000 N
b. 1000 N
c. Any force larger than zero
d. The spaceship will keep moving away from the space station no matter how large the force.
e. Not enough information is given to answer the question.
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