Two cars are 300 m apart and move directly towards each other with speeds 20 m/s and 30 m/s. They apply brakes simultaneously. Car A retards at 2 m/s² and car B at a m/s². They just avoid collision and both come to rest before reversing. If a=n/4 m/s², find n.
Physics · Kinematics part-3 Relative motion · Relative motion in one dimension
Two cars are 300 m apart and move directly towards each other with speeds 20 m/s and 30 m/s. They apply brakes simultaneously. Car A retards at 2 m/s² and car B at a m/s². They just avoid collision and both come to rest before reversing. If a=n/4 m/s², find n.