Which statement BEST describes how magnetic forces can be harnessed to increase the speeds at which trains go?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance

How many astronauts have walked on the moon?

Atoms containing radioactive nuclei are called