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Reference.org
Mean speed theorem
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<p>The mean speed theorem, also known as the Merton rule of <a href="/facts/Uniform_acceleration/UVDmjYvR">uniform acceleration</a>, was discovered in the 14th century by the <a href="/facts/Oxford_Calculators/f2g8d1vh">Oxford Calculators</a> of <a href="/facts/Merton_College/AKEJHoTN">Merton College</a>, and was proved by <a href="/facts/Nicole_Oresme/sv3C8R2s">Nicole Oresme</a>. It states that a uniformly accelerated body (starting from rest, i.e. zero initial velocity) travels the same distance as a body with <a href="/facts/Speed/I3qgMPfs">uniform speed</a> whose speed is half the final velocity of the accelerated body. </p>