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If the velocity of a body becomes double...

If the velocity of a body becomes double, its kinetic energy will become

A

twice

B

half

C

four time

D

one fourth.

Text Solution

Verified by Experts

The correct Answer is:
C
Kinetic energy = `1/2 mv^2 ` when `v = 2v`
Kinetic energy `= 1/2 m[2v]^2 = 4 1/2 mv^2`
= 4times initial value.
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Knowledge Check

  • When the mass and speed of body is doubled, the kinetic energy of the body

    A
    because double
    B
    becomes four times
    C
    becomes eight times
    D
    remains unchanged.

  • The kinetic energy of a body becomes four times its initial value. The new linear momentum will be

    A
    same as the initial value
    B
    twice of the initial value
    C
    four times of the initial value
    D
    eight times of the initial value

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