Jee Main
Laws Of Motion
JEE Main 2022 (Online) 28th June Evening Shift
MCQ+4 / -12022
A block of mass 2 kg moving on a horizontal surface with speed of 4 ms\(-\)1 enters a rough surface ranging from x = 0.5 m to x = 1.5 m. The retarding force in this range of rough surface is related to distance by F = \(-\)kx where k = 12 Nm\(-\)1. The speed of the block as it just crosses the rough surface will be :