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The speed of something orbiting another body can be calculated from the mean altitude of the orbit and the mean radius and the mass of the body.
The distance to an interplanetary probe can be calculated from the time elapsed from the sending of a communication signal to the probe until receipt of acknowledgement of the signal from the probe. The speed of the probe can be calculated by doing that twice.
The rate at which time passes for an object in space can be calculated from the speed of the object.
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Is Speed is measured in meters?
Speed is distance divided by time. So : you could have meters per second, or meters per hour, etc.
How do you calculate speed and distance in space?
The answer depends on what information, if any, you have. If your question is in the context of space walks near earth-orbiting stations, you could have gyroscopes that measures your movement. Distance is easily measured, especially with laser range-finders, Change in distance is velocity and so on.
What does a horizontal slope of a distance versus time graph indicate about an objects motion?
It is a measure of speed of the object, but only in the radial direction: that is, towards or away from the point from which distance is measured. The object could be going around that point in circular motion and the graph would show absolutely nothing.
How can you determine the speed of an object that has constant motion if you have a distance vs time graph of the motion?
If constant motion means constant velocity then, total distance / total time = avg velocity => avg speed constant velocity => avg velocity = velocity
Do two vehicles travelling at the same speed cover the same distance at the same time?
Speed is measured by distance and time, yes. Velocity takes in direction.
