Question

if the velocity is one fourth then how it affects the kinetic energy. i will mark brainliest the first perosn to answer. just tell wht will happn to kinetic enrgy in terms of multiplication or division​

Answer 1

Answer:

The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy.

K=

2

1

mv

2

When, v=2v,

K

′

=

2

1

m(2v)

2

K

′

=4×

2

1

mv

2

K

′

=4K

Hence, when velocity is doubled, kinetic energy becomes 4 times.

Explanation:

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Answer 2

Answer:

We have K.E=

2

1

mv

2

where m is the mass and v is the velocity.

Now,

New mass =m−

4

m

=

4

3

m

New velocity =2v

Now K.E=K=

2

1

×

4

3

m×(2v)

2

=

2

3mv

2

=3K

Explanation:

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