Science, asked by anjalidarvekar74, 7 months ago

write down the expression of kinetic energy​

Answers

Answered by jee47
6

Answer:

Energy possed by a body by virtue of its motion is referred to as Kinetic Energy.

Consider a body of mass 'm' starts moving from rest. After a time interval 't' its velocity becomes V.

If initial velocity of the body is V

i

=0, final velocity V

f

=V and the displacement of body is 'd'. Then, first of all we will find the acceleration of body.

Using equation of motion 2aS=V

f

2

−V

i

2

Putting the above mentioned values we get, 2ad=V

2

−0.

That is, a=

2d

V

2

.

Now force is given by, F=ma .

Putting the value of acceleration, we get,

F=m(

2d

V

2

).

As we know that Work done =Fd.

Putting the value of F, we get, Workdone=(

2d

mV

2

)(d)=(

2

mV

2

)=

2

1

mv

2

.

Therefore, the expression for kinetic energy is

2

1

mv

2

Answered by mskoo7
2

Answer:

kinetic energy is the energy possessed by a moving body

Explanation:

example : a moving car

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