when their velocity vectors are in the same direction and same magnitude
a glacier that stays in one spot ( stationary )answer 2 the above is OK, but these stationary ice fields are usually called ice plateaus. And they are plateaus because they don't move; otherwise they would be sloping. Actually they may have a very slight slope, but they will appear flat.
Just like everything else, that would depend on who is looking at the watch, and how the observer is moving relative to it. To the person wearing the watch, it would appear perfectly normal, as it tick-tocked regularly and the hands moved slowly. But to a stationary observer ... one with respect to whom the watch is moving at light speed ... the watch would appear to have stopped --- just like the heartbeat of the person wearing it!
Because they spin. The radiation is directional and sweeps across the universe. A relatively stationary observer sees the pulsar as an off/on phenomenon.
Planet comes from an ancient Greek term meaning 'wanderer'. They were called wanderers because they appear to move against the apparent stationary background of stars.
The Earth would appear to go through the same phases that we see in the Moon, except that the Earth would appear to be almost stationary in the sky; it would wiggle a little.
Airplanes can appear to be stationary to someone on the ground, but they cannot be stationary in the air.
how a satellite can appear to be stationary above the earth´s surface how a satellite can appear to be stationary above the earth´s surface
polaris
The Earth orbit in which satellites appear to be stationary is called the, "Geostationary Orbit". Some call it a synchronous orbit.
blow it up
Parallax movement.
False
Stars are not twinkling really. It is because of the atmosphere of the earth due to which they appear twinkling. However if they are seen from above the atmosphere of earth then they appear stationary.
It depends on your point of observation. It may appear to curve if you are stationary with respect to the surface of the Earth, though with respect to the travel of the object it will (with ever-so-slight perterbations by the sun, moon, etc.) fall directly toward the center of the Earth.
The same way as the rest of the world... Think of two balls, one stationary, one moving. The moving is the Earth, and the stationary is the Sun. Hold the balls up. Rotate one, and hold the other still. As you can see, the Sun will appear on the same side, from east to west.
Stationery, as an accounting item, does not appear on a business Balance Sheet. The Balance Sheet is reserved for assets and liabilities. The Income Statement reflects income and expenses and because Stationery is an expense item it will appear on the Income Statement and not the Balance Sheet.
the person standing on the ground, the train is moving and the ground is stationary. but the person on the train looks he is stationary and the ground is moving.