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- 5 Apr 2008
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Hi guys,
What's wrong with this logic?
Force = mass x acceleration [f=ma]
Work Done / energy = Force x Distance [E=fd]
Therefore... E = m x (v/t) x vt .... (Where v/t is acceleration a and vt is distance d)
So .. Kinetic Energy E = mv^2
So what's happened to the 1/2 in KE=1/2 mv^2? If you were to derive the kinetic energy in a specific case using relationships like this or others like power=energy/time then how to you ensure that the 1/2 isn't lost?
What's wrong with this logic?
Force = mass x acceleration [f=ma]
Work Done / energy = Force x Distance [E=fd]
Therefore... E = m x (v/t) x vt .... (Where v/t is acceleration a and vt is distance d)
So .. Kinetic Energy E = mv^2
So what's happened to the 1/2 in KE=1/2 mv^2? If you were to derive the kinetic energy in a specific case using relationships like this or others like power=energy/time then how to you ensure that the 1/2 isn't lost?
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