A dockworker applies a constant horizontal force of 89.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The biock starts from rest and moves a distance 12.5 m in a time of 4.80 s You may want to review (Page). For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Detemmining force from acceleration. Part A What s the mass of the block of ice? Express your answer in kilograms. v View Available Hintts) Hint 1. How to approach the probiam Start by drawing a skoch of the block of ice and its moton scross the smooth horizontal floor. Creato a standard coordinate system, and draw eli the forces on the block Do you need to worry abcut the vertical forces igravity and the surface's normal force) on the block? Why? You kIw he fuILe applieu lurizunlaly un Uie bluck. Tu delermine ls mass, wliat ullier quanlily musi yuu eIu? How can you use the intormation provided about the block's motion to hep you detemmine that other quantty? kg Submit RequestAnswar Part B If the worker stops pushing after 4.80 s , how far does the block move in the next 4.30 s ? Express your answer in meters. v View Available Hint(s) Hint 1. How to approach the problem To find out how far something moves in a time period, you need to know its initial velocity and acceleration. How can you determine these quantities for the block in the second time interval, when the worker is no longer pushing? During that second interval of motion, there is no force on the block of ice from the dockworker. What can be said about the acceleration on the block in this time? Use this information to find the distance travelled during the second time interval. ? m Submit Request Answer