**Associate**

- Joined
- 5 Apr 2008

- Posts
- 1,526

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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