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Prove 3rd equation of motion

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Prove 3rd equation of motion

Posted by Prachi Shukla 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Srushti Khadtare 4 years, 4 months ago

V^2=u^2+2as Sol. We know that V = u+at =>v-u=at Or t =(v-u)/a..........eq.(3) Also we know that Distance=average velocity x time Therefore,s=[(v+u)/2)] x [(v-u)/a] => s =(v^2-u^2)/2a => 2as =v^2 -u^2 Or v^2=u^2+2as

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