Question

Please solve the given question

Answer 1

Question:

A body starts from rest with accelaration 2 m/s² .

The distance travelled in $4^{th}$ second is:

Given:

$Accelaration = 2 ms^{-2}$

$Time = 4^{th} sec$

Concept:

Here the initial velocity is 0.

We know:

$s_{n} = u + \dfrac{1}{2}a(2n - 1)$

Solution:

$s_{n} = 0 + \dfrac{1}{2} × 2(2 × 4 - 1)$

$s_{n} = 0 + \dfrac{1}{2} × 2 × 7$

$s_{n} = 7 m$.

Reference:

Here the initial velocity is taken as 0 , because the body has started from rest....

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