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A ball that is thrown up returns to the ...

A ball that is thrown up returns to the surface of Earth because of

A

Gravity

B

Friction

C

Electricity

D

Magnetism

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A mass m is taken to a height R from the surface of the earth and then is given a vertical velocity upsilon . Find the minimum value of upsilon , so that mass never returns to the surface of the earth. (Radius of earth is R and mass of the earth m ).

A ball is thrown vertically upwards with a velocity of 49 m/s Calulate: (i) the maximum height to which it rises . (ii) the total time it takes to return to the surface of the earth .

Knowledge Check

  • If a ball is thrown upwards from the surface of earth :

    A
    The earth remains stationary while the ball moves upwards
    B
    The ball remains stationary while the earth moves downwards
    C
    The ball and earth both move towards each other
    D
    The ball and earth both move away from each other

  • A particle of mass m is thrown upwards from the surface of the earth, with a velocity u . The mass and the radius of the earth are, respectively, M and R . G is gravitational constant g is acceleration due to gravity on the surface of earth. The minimum value of u so that the particle does not return back to earth is

    A
    `sqrt((2GM)/R)`
    B
    `sqrt((2GM)/(R^(2))`
    C
    `sqrt(2gR^(2))`
    D
    `sqrt((4GM)/(R^(2))`

  • A body is thrown from the surface of the earth with velocity u m/s. The maximum height in metre above the surface of the earth up to which it will reach is (where, R = radish of earth, g=acceleration due to gravity)

    A
    `(u^(2)R)/(2g(R-u^(2)))`
    B
    `(2u^(2)R)/(gR-u^(2))`
    C
    `(u^(2)R^(2))/(2gR^(2)-u^(2))`
    D
    `(u^(2)R)/(gR-u^(2))`

    • Similar Questions

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    A ball is thrown vertically upwards with a velocity of 49 ms^-1 . Calculate :The total time it takes to return to the surface of earth.

    A ball is thrown vertically upwards with a velocity of 49 m//s . Calulate (i) The maximum height to which it rises, (ii) the total time it takes to return to the surface of the earth.

    A ball thrown up vertically returns to the thrower after 8 second. Calculate (i) velocity with which it was thrown (ii) maximum height it acquired. (iii) velocity with which it hit the ground.Given g=9.8 m//s^(2) .

    A ball thrown up vertically returns to the ground after 12.5 second. Find the velocity with which it was thrown up? ( g = 10 ms^(-2) )

    A ball is thrown upwards and returns to the ground describing a parabolic path. Which of the following quantities remains constant ?

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