both frie puck\'s transported far into outer space, where and gravity are neglig

Question

both frie puck's transported far into outer space, where and gravity are negligible. The same constantf is applied to the puck (through a spring scal stretches the same amount), and the puck's acceleratio (relative to the distant stars) is measured. What is puck's acceleration in outer space? (a) It is somewho greater than its acceleration on the Earth. (b) It is the same as its acceleration on the Earth. (C) It is less than its acceleration on the Earth. (d) It is infinite because neither friction nor gravity constrains it. e) It is ve larg aceitit rictio on nt force e that On Vhat is the at ry e because acceleration is inversely proportional to weight and the puck's weight is very small but not weight and the puck's weight is very smal but not zero 6./The manager of a department store is pushing horizon- tally with a force of magnitude 200 N on a box of shirts. The box is sliding across the horizontal floor with a for- ward acceleration. Nothing else touches the box. What must be true about the magnitude of the force of kinetic friction acting on the box (choose one)? (a) It is greater than 200 N. (b) It is less than 200 N. (c) It is equal to 200 N. (d) None of those statements is necessarily true. Unless otherwise noted, all content on this page is © Cengage Learning. Date:

Explanation / Answer

Since the box is sliding the floor with forward acceleration then the force applied must be greater than the force of kinetic friction

so answer is (b) frictional force must be less than 200 N

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