A block of dry ice weighing 1960 N is lying on a walkway. The coefficient of friction of the walking surface is 0.125. With what minimum force must you push or pull the block to move the Select one: a. 245 N O b. 1960 N O c. 1.57 x 104 N O d. 6.38 x 105N Review the following diagram before answering multiple-choice question 5. 5.0 kg 10.0 kg Two masses are connected by a string and pulled along a frictionless surface by another string to which a tension of 40.0 N is applied. The magnitude of the system's acceleration is Select one O a. 2.7 m/s2 O b. 8.0 m/s2 O c. 13 m/s2 O d. 20 m/s2 An elevator that weighs 3.50 x 10 N is accelerated upward at 1.00 m/s. What force does the cable exert to give the elevator this acceleration? Select one: O a. 0.OO N O b. 3.57 x 102 N O c. 3.50 x 103 N O d. 3.86 x 103 N