Can anyone tell 4th equation of motion.

Dear student, 

We know the first equation of motion,
v = u + at
Second equation of motion,
s = ut + 1/2 at2
The third equation of motion,
v2 = u2 + 2as
The fourth equation of motion,
The distance travelled by a body in tth second (St) = The difference between the distance travelled in t seconds and distance travelled in (t-1) seconds.
St =( ut +1/2 at2 ) - {u(t-1) + 1/2 at2}
    = u + a [n - 1/2]

u = initial velocity, v = final velocity, a = uniform acceleration, s= distance travelled, t = time period in seconds


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Cresent moon
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moyion only have three equation!!!!!
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To derive the fourth equation of motion, first we have to consider the equation for acceleration and then to rearrange it.
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