From: nileshnegi

Subject: kinematics

Message Body:

on a 2 lane road,car A is travelling with a speed of 36 km/hr 2 cars B n C approach car A in opposite direction with a speed of 54km/hr each. at a certain instant when distance AB is equal to AC both bieng 1 km.. B decide to over lap A before C does . what minimum of acc of car B is required to avoid an accident with car A?