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299,792 kilometers per second = 1,079,251,200 km/hr !!! 186,287 miles per second = 670, 633,200 mph
A traveler, moving at the speed of light , would circumnavigate the equator approximately 7.5 times in one second . By comparison, a traveler in a jet aircraft, moving at a ground speed of 500 mph, would cross JUST the continental U.S. once in 4 hours .
It takes 499.0 seconds (8 min) for light to travel from the Sun to the Earth
You may be perfectly still yet the earth is spinning on its axis and orbiting the sun.
The sun orbits the center of the
galaxy, our galaxy and
Andromeda are moving toward
one another, most of the other
galaxies are moving away.
So to measure motion in a meaningful way, we measure it relative to the observer or another object we consider not to be moving. When you pass a car on the highway moving in the same direction, you may be going 70mph, and the other car 65mph. But your speed relative to the other car is 5mph. When the shuttle docks with the space station the two orbiting objects approach one another at a very slow speed relative to one another, but both are orbiting at 17,000mph relative to the surface of the earth .
A car travels 200 m in 10 seconds . What is the average speed of the car? ANSWER: Ave speed= total d/total time = 200m/10s 20 m/s
Definitions: A change in position in a certain amount of time is __________. __________________ is the rate at which an object moves and is determined by dividing ____________ by _____________. _________________________ is speed that does not change. _________________________ is calculated by dividing the total distance by the total time .