Q. The motion of a particle is described by the equation $u = at$. The distance travelled by the particle in the first 4 seconds
A) $4a$
B) $12a$
C) $6a$
D) $8a$
Explanation
(d) $u = at,x = \int_{}^{}{\ u\ dt} = \int_{}^{}{at\ dt} = \frac{at^{2}}{2}$
For $t = 4\ \sec,x = 8a$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.