The space shuttle leaves the surface of the earth and reaches a height of 50,000 kilometers in 25 seconds. What is the average speed of the shuttle during this journey? Select one:
200,000 km/s
20,000 km/s
200 km/s
2,000 km/s

2000 km/s

Explanation:

the formula for speed is speed=distance/time, this is the formula that should be used here. 50,000/25, which equals 2,000

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs