A body can escape the gravitational pull of the earth if it is thrown up with a velocity of ________ miles/second ?
Correct answer: D. 07Trying Interactive Physics Simulation Software
- A. 35
- B. 25
- C. 12
- D. 07Trying Interactive Physics Simulation Software
Explanation
Earth's escape velocity is about 11.2 km/s, which is approximately 7 miles per second. A launch speed of about 7 miles per second is therefore required when air resistance is ignored.
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