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Is it necessary to give initial speed of...

Is it necessary to give initial speed of 11.2 km/s to  a rocket for its separation from the earth ?

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No. Initially any specd is given to a rocket. Duc to push out of gas, the speed of rocket increases and it reaches definite place.
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KUMAR PRAKASHAN-GRAVITATION-Section - C Objective Questions (VSQs)
  1. Is fuel required for a satellite to orbit the earth?

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  2. For a satellite escape velocity is 11.2 km/s from the earth. If the sa...

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  3. Is it necessary to give initial speed of 11.2 km/s to  a rocket for it...

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  4. Why the lighter gases like H2, He are rare in earth ?

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  5. Name two factors which determine whether a  planet has an atmosphere o...

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  6. Is the angular velocity of planet dependon mass?

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  7. Let a planet revolving close to the earth, Obtain relation between esc...

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  8. Does speed of planet remain constant in an orbit?

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  9. What is the effect of decreasing the height of a satellite orbiting ar...

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  10. The escape velocity on the surface of earth is 11.2 km/s. What will be...

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  11. Find the kinetic energy needed to project a body of mass m from the su...

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  12. What is the escape velocity from a black hole ?

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  13. As astronaut dropped a spoon from outside spacecraft will the spoon re...

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  14. Give the name of first Indian Astronaut.

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  15. What is the frequency of oscillation of a  pendulum mounted in a lift ...

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  16. Distance of two planets from the sun are 10^11 m and 10^(10) m respec...

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  17. In Bohr’s model, the atomic radius of the first orbit is r. Then, the ...

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  18. If any satellite has kinetic energy 6 xx 10^(9)J , then what its poten...

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  19. A satellite has potential energy -8 xx 10^(9)J, then what is its bindi...

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  20. The ratio between Bohr radii is

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