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Kinetic energy of a particle moving in a...

Kinetic energy of a particle moving in a straight line varies with time `t` as `K = 4t^(2)`. The force acting on the particle

A

is constant

B

is increasing

C

is decreasing

D

first increases and then decreases

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • The kinetic energy K of a particle moving in a straight line depends on the distances as K =as^2 . The force acting on the particle is (where a is a constant)

    A
    2as
    B
    as
    C
    2a
    D
    `sqrt(as^2)`

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    A
    10 Ns
    B
    12 Ns
    C
    8 Ns
    D
    6 Ns

  • Kinetic energy of a particle moving in a straight line is proportional to the time t. The magnitude of the force acting on the particle is :

    A
    Directly proportional to the speed of the particle
    B
    Inversely proportional to `sqrt(t)`
    C
    Inversely proportional to the speed of the particle
    D
    Directly proportional to `sqrt(t)`

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