If time is relative, is speed also?

Question

If we measure time by the solar year, would we calculate speed on another planet, like mars maybe, differently based on it’s solar year? Or would we use “Earth speed”?

In: 0

Answer 1

Yes, speed is relative.

Let’s say that you are standing still on a train that’s traveling at 65 kmh. Relative to the train, you are traveling at 0 kmh. But relative to the Earth’s surface, you’re traveling at 65 kmh.

Answer 2

Yes, speed is relative.

Let’s say that you are standing still on a train that’s traveling at 65 kmh. Relative to the train, you are traveling at 0 kmh. But relative to the Earth’s surface, you’re traveling at 65 kmh.