Physics problems about motion After braking, a stops 36 meters ahead within 3 seconds, B stops after 1.5 seconds, B advances () A.9m B.36m C.18m D.72m

Physics problems about motion After braking, a stops 36 meters ahead within 3 seconds, B stops after 1.5 seconds, B advances () A.9m B.36m C.18m D.72m

V A / 2 * 3 = 36, v = 24m / S
V/2*1.5=24/2*1.5=18m
So choose C