1.

What will be the kinetic energy if velocity will be tripled?​

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

=

1

2

m

v

2

K=

2

1

​

MV

2

When,

v

=

2

v

v=2V,

K

′

=

1

2

m

(

2

v

)

2

K

′

=

2

1

​

m(2v)

2

K

′

=

4

×

1

2

m

v

2

K

′

=4×

2

1

​

mv

2

K

′

=

4

K

K

′

=4K

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


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