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A missile is launched with a velocity le...

A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is

A

Positive

B

Negative

C

May be negative or positive depending upon its initial velocity

D

Zero

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The correct Answer is:
B
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ALLEN -GRAVITATION-EXERCISE 1
  1. If M(e) is the mass of earth and M(m) is the mass of moon (M(e)=81 M(m...

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  2. The gravitational potential energy is maximum at :

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  3. A missile is launched with a velocity less than the escape velocity. T...

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  4. A body attains a height equal to the radius of the earth when projecte...

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  5. The gravitational potential energy of a body at a distance r from the ...

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  6. A particle falls towards the earth from inifinity. The velocity with w...

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  7. A projectile of mass m is thrown vertically up with an initial velocit...

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  8. Two small and heavy spheres, each of mass M, are placed a distance r a...

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  9. An artificial satellite moving in a circular orbit around the earth ha...

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  10. A particle of mass m is moving in a horizontal circle of radius R unde...

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  11. Potential energy of a 3kg body at the surface of a planet is -54 J, th...

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  12. Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1). Gravit...

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  13. The ratio of radii of two satellites is p and the ratio of their accel...

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  14. The escape velocity for a body projected vertically upwards from the s...

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  15. The escape velocity for the earth is 11.2 km / sec . The mass of anoth...

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  16. A body is projected vertically upwards from the surface of the earth w...

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  17. Binding energy of moon and earth is :-

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  18. Two artificial satellites A and B are at a distance r(A) and r(B) abov...

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  19. The average radii of orbits of mercury and earth around the sun are 6x...

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  20. A body is dropped by a satellite in its geo-stationary orbit :

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