MCQOPTIONS
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				| 1. | 
                                    A box is given a push across the floor. It comes to stop shortly after. Which one of the following reasons explain why this happen? | 
                            
| A. | Gravity is acting on the box in the direction opposite to the box's movement. | 
| B. | Friction is acting on the box in the same direction of the box's movement. | 
| C. | \[\frac{1}{\sqrt{2}-1}\] | 
| D. | The heat produced during the box's movement slows down the box. | 
| Answer» D. The heat produced during the box's movement slows down the box. | |