Important problem in 1-d motion and displacement nth second. Physics

jee 2022, jee advnaced 2022, jee mains 2022, namo kaul, jee physics, jee live daily 3.0, iit jee physics, unacademy physics, jee advanced 2021, kinematics 1d, kinematics 1d jee, kinematics 1d unacademy, kinematics class 11, kinematics, kinematics physics, kinematics 1d class 11, kinematics graphs, kinematics in one dimension, distance and displacement, kinematics class 11 iit jee, kinematics 1d jee questions, kinematics 1d jee mains previous year questions