πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    What is the minimum escape velocity of rocket to be

    launched into space?
    A 5 Km/Sec. Correct Answer Incorrect Answer
    B 6 Km/Sec. Correct Answer Incorrect Answer
    C 11 Km/Sec. Correct Answer Incorrect Answer
    D 15 Km/Sec. Correct Answer Incorrect Answer

    Solution

    On the surface of the Earth, the escape velocity is about 11.2 kilometers per second 06.96 mi/s), which is approximately 34 times the speedof sound(Mach34) andseveral timesthemuzzlevelocity ofarifle bullet (up to 1.7 km/s). However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s. In physics,escapevelocityisthespeedatwhichthe kinetic energy plus the gravitational potential energy of an object is zero.

    Practice Next

    Relevant for Exams:

    ask-question