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The formula S=u+a(n-1/2) is dimensionally not correct.
But still we use it in variety of applications. Why do we still get the correct answer?
Please reply!!!
Sn=un+an^2/2 ...........1 (displacement in n seconds)
Sn-1=u(n-1) +a(n-1)^2 /2.........2 (displacement in n-1 seconds)
Snth=Sn-Sn-1
Snth =u + a(n-1/2) ..............3
in eq 1 , dimension of n is time and in eq 2 ,n-1 second that means 1 in n-1 second is having dimension of time......
1sec is a constant but it is having dimension ....so in same manner in eq 3 ,n-1/2 has dimension of time .....
so this relation is correct
approve my ans if u like
he you have taken this q frm dc pandey na
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