derive the formula for the kinetic energy of an object of mass m moving with velocity v
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Answered by
16
W=f*s
also
f=ma
a=f/m (2nd law of motion) take this as Ist eq.
also
v²-u²=2as
if initial velocity is 0
v²-0²=2as
v²=2as
v²/2s=a take this as 2nd eq.
from Ist and 2nd
f/m=v²/2s
fs/m=v²/2
fs=mv²/2 (FS =work)
fs=1/2mv²
work =1/2mv²
kinetic energy =1/2mv²
also
f=ma
a=f/m (2nd law of motion) take this as Ist eq.
also
v²-u²=2as
if initial velocity is 0
v²-0²=2as
v²=2as
v²/2s=a take this as 2nd eq.
from Ist and 2nd
f/m=v²/2s
fs/m=v²/2
fs=mv²/2 (FS =work)
fs=1/2mv²
work =1/2mv²
kinetic energy =1/2mv²
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hope this will help you
Answered by
6
kinetic energy is the energy possed by an object by virtue of its motion
k.e =1/2mv^2
k.e =1/2mv^2
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