Question

What do you mean by kinetic energy ? Derive an expression for the kinetic energy of an object of mass m moving with velocity, upsilon.

Answer 1

Answer:

the energy possessed by body in its state of motion is called kinetic energy

Explanation:

as we know

${v }^{2} = {u }^{2} + 2as$

in this case the initial velocity is equals to 0

then:

${v}^{2} = 2as$

$s = {v}^{2} \div 2a$

work done = f×s

as : the value of s is found by us

and f= ma

putting value of f and s

=

$ma \times {v}^{2} \div 2a$

a will cut with another a

then:

workdone i equals to

$1 \div 2 \times m {v}^{2}$

where workdone is kinetic energy