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Statement-1: Non zero work has to be don...

Statement-1: Non zero work has to be done on a moving particle to change its momentum.
Statement-2 : To change momentum of a particle a non zero net force should act on it.

A

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

B

Statement -1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

C

Statement-1 is true, statement-2 is false.

D

Statement-1 is false, statement-2 is true.

Text Solution

Verified by Experts

The correct Answer is:
D
If the linear momentum of a particle is changing then work done (i.e. change in kinetic energy may or may not equal zero.
and `vecF=(dvecp)/(dt)`
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Knowledge Check

  • Statement -1: The work done by all forces on a system equals to the change in kinetic energy of that system . This statement is true even if nonconservative forces act on the system. Statement -2: The total work done by internal forces may be positive.

    A
    Statement `-1` is True, Statement `-2` is True, Statement`-2` is a correct explanation for Statement`-1`
    B
    Statement `-1` is True, Statement `-2` is True, Statement`-2` is NOT a correct explanation for Statement`-1`
    C
    Statement`-1` is True, Statement`-2` is False.
    D
    Statement`-1` is False,Statement`-2` is True.

  • Statement -1: If kinetic energy of a system is zero then linear momentum of each of particle of the system must be zero. Statement-2: If linear momentum of a system is zero then kinetic energy of system must be zero. Statement-3: If linear momentum of a particle is zero then kinetic energy is zero. Select the correct sequence.

    A
    TTF
    B
    TFT
    C
    FFT
    D
    TFF

  • Statement-1: Two particles acted by same net force for same time always have same change in kinetic energy. Statement-2: Two particles acted by same net force having same displacement always have same change in kinetic energy.

    A
    Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
    B
    Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
    C
    Statement-1 is true, statement-2 is false.
    D
    Statement -1 is false, statement -2 is true.

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