Answer : Now according to the science,
S = displacement
t = Time
u = Initial Velocity
a = Acceleration
Following up on the solution:
u = Initial velocity if an object
a = Acceleration
Sn= Distance travelled in n seconds from an essential position
Calculating the second equation of motion,
Calculating the distance travelled in t second
S = ut + ½ at2
Calculating the distance travelled in n second
Sn= un + 1/2an2
Now distance travelled in following (n – 1) seconds
Sn-1 = u (n – 1) + 1/2 a(n-1)2
Calculating the distance travelled nthseconds
Snth= Sn– S(n-1),
Snth= un + ½ an2– [u (n-1) + ½ a (n-1)2].
On simplifying the mentioned equation,
Snth= u + ½ a (2n-1).
Sn= u + a (n – ½).
Hence, the formula for distance travelled in nth second is given by,
Sn= u + a (n – ½).