ormat Tools Add-ons Help Accessibility Last edit was 3 minutes ago Normal text Arial - 11 + B J U A / 9 - Chap3 assignment Mr. Whelan woke up late for school on anything but a backpack day. And since he was late, he took the shortcut through the forest. He started walking at a speed of 1.5m/s. As it was anything but a backpack day, he was dragging a wooden box(27kg) by pulling a rope tied on the wooden box with a force of 120N(N30E) behind him and the floor exerts a horizontal force of friction of 20N that opposes the motion. After walking 80m from home he suddenly stopped and looked back and saw a kangaroo 20m away that was chasing him at a speed of 4m/s. It took Mr. Whelan 3s to start running while dragging the wooden box a) What is the acceleration of the wooden box? b) If Mr. Whelan was 70m away from school when he started running. Will Mr. Whelan reach the school before the kangaroo knocks him out? Would the speed be realistic?|