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If Sn=2+0.4n find initial velocity and a...

If `S_n`=2+0.4n find initial velocity and acceleration

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we have `S_n=u+a (n-1/2)`
`S_n=(u-a/2)+an`
`S_n`=2+0.4n comparing with above equation
U=2.2 units a=0.4 units.
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