Q. The distance travelled by a particle starting from rest and moving with an acceleration $\frac{4}{3}ms^{- 2}$, in the third second is
A) $\frac{10}{3}m$
B) $\frac{19}{3}m$
C) $6\ m$
D) $4\ m$
Explanation
(a) $S_{n} = u + \frac{a}{2}(2n - 1) \Rightarrow S_{3} = 0 + \frac{4/3}{2}(2 \times 3 - 1)$
$\Rightarrow S_{3} = \frac{10}{3}m$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.