A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is.........$m$ $(g = 10\,m/{s^2})$
A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is.........$m$ $(g = 10\,m/{s^2})$
$25$
$45$
$90$
$125$
A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is.........$m$ $(g = 10\,m/{s^2})$
${h_n} = \frac{g}{2}(2n - 1) \Rightarrow {h_{{5^{th}}}} = \frac{{10}}{2}(2 \times 5 - 1) = 45\;m$.