The initial velocity of a body moving along a straight line is $7 \,m/s$. It has a uniform acceleration of $4\,m/{s^2}$. The distance covered by the body in the $5^{th}$ second of its motion is..........$m$
The initial velocity of a body moving along a straight line is $7 \,m/s$. It has a uniform acceleration of $4\,m/{s^2}$. The distance covered by the body in the $5^{th}$ second of its motion is..........$m$
$25$
$35$
$50$
$85$
The initial velocity of a body moving along a straight line is $7 \,m/s$. It has a uniform acceleration of $4\,m/{s^2}$. The distance covered by the body in the $5^{th}$ second of its motion is..........$m$
${S_n} = u + \frac{a}{2}\left[ {2n - 1} \right]$
${S_{{5^{th}}}} = 7 + \frac{4}{2}\left[ {2 \times 5 - 1} \right] = 7 + 18 = 25\,m$.