what is 4th equation of motion don't spam
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[S = vt – ½ at2]
is 4th equation of motion
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we know that ( u + v )/2 is the average velocity in case of constant accelaration.
we also know that average velocty into time is total displacement.
now we have (u+v)/2*t=average velocity * t
which can also be written as (u+v)t/2=s
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