Two identical blocks connected to ideal springs are oscillating on a horizontal frictionless surface. The motion of the blocks A and B over time are shown in the graph below. Displacement (cm) block A block B -... 3- 5% Time (s) -2-+ -3- Why are the periods different for blocks A and B? Choose 1 answer: Block B has a longer period because it has a smaller amplitude. O Block B has a shorter period because it has a smaller amplitude. O Block B has a shorter period because it has a larger spring constant. O Block A has a longer period because it has a larger spring constant