Suppose that a 1000 -kg rocket's thrusters give it an acceleration of $20 \mathrm{m} / \mathrm{sec}^{2}$ when it is launched from Earth's surface. If Earth's gravity applies a downward force of approximately 10,000 newtons on the rocket, what is the force of the thrusters on the rocket? If the same rocket were launched from the surface of another planet, would the acceleration of the rocket be greater or less than the acceleration experienced by the rocket taking off from the Earth? Explain your answer.