New Mexico NM-ASR Science Grade 8 Practice Questions - New Mexico Assessment Of Science Readiness - Science, Grade 8 Exam

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A spacecraft fires its thrusters and exerts a force on the exhaust gases. Which statement best explains how the spacecraft accelerates forward?

The exhaust gases exert an equal and opposite reaction force on the spacecraft The spacecraft pushes against the air to move forward The exhaust gases create a vacuum that pulls the spacecraft forward Gravity propels the spacecraft once the thrusters are fired

Correct Answer:

The exhaust gases exert an equal and opposite reaction force on the spacecraft

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