Q: Ion drives have low thrust but high what? Read this paragraph and choose the correct option from the provided answers: Ion drives have low thrust but high efficiency. They have already been used on several space missions, including NASA's Deep Space 1spacecraft and Japan'sHayabusa asteroid sampling probe. Source: Photo courtesy of NASA,http://commons. wikimedia. org/wiki/File:Ion_Engine_Test_Firing_-_GPN2000-000482. Choices: - power - acceleration - tolerance - efficiency A:
A:
efficiency