If a resultant force of $30N$ acts on a body of mass $6kg$.What is the acceleration of the body?

Given: Resultant force, $f=30 \mathrm{~N}$; mass of body, $m=6 \mathrm{~kg}$

Newton's second law $\rightarrow F=m$. a [a sacceleration]

$\Rightarrow a=30 / 6=5 \mathrm{~m} / \mathrm{s}^{2}$

option (C) is the correct answer.