What is the acceleration at 9 seconds? Type your answer... 27 1 point The object graphed changes directions at t-type your answer... second and t-type your answer... seconds 28 1 point After 2 seconds, the object's displacement is_meters. Type your answer.... 29 1 point From 9 to 13 seconds, the displacement of the object is_m. 2 1 (s/w) a 2 t(s) 3 4 5 6 8 9 10 11 12 13