On the interval {{MATH_112}} the velocity is {{CMD_113}} {{CMD_114}}increasing, because the function {{MATH_115}} is increasing on that interval{{CMD_116}} {{CMD_117}}decreasing, because the function {{MATH_118}} is decreasing on that interval{{CMD_119}} {{CMD_120}}increasing, because the graph of {{MATH_121}} is concave up on that interval{{CMD_122}} {{CMD_123}}decreasing, because the graph of {{MATH_124}} is concave up on that interval{{CMD_125}} {{CMD_126}}increasing, because the graph of {{MATH_127}} is concave down on that interval{{CMD_128}} {{CMD_129}}decreasing, because the graph of {{MATH_130}} is concave down on that interval{{CMD_131}} {{CMD_132}}zero{{CMD_133}} {{CMD_134}}positive and constant{{CMD_135}} {{CMD_136}} {{CMD_137}}