Question: For Problems 24-26: A 25-kg box is pushed up a 10.0 m ramp at a uniform speed. The top of the ramp is 2.0 m



For Problems 24-26: A 25-kg box is pushed up a 10.0 m ramp at a uniform speed. The top of the ramp is 2.0 m higher than the bottom. 10.0 m 2.0 m 24. What is the potential energy of the box at the top of the ramp relative to the bottom of the ramp? a. OJ b. 19.6 ] C. 490 J d. 2,450 J e. None of the above 25. What work was done pushing the box up the ramp if friction were negligible? a. 0 J b. 19.6 ] c. 490 J d. 2,450 J e. None of the above 26. What work was done pushing the box up the ramp if the coefficient of kinetic friction between the box and the ramp was 0.123? a. OJ b. 19.6 ] C. 490 J d. 2,450 J e. None of the aboveSHOW YOUR COMPLETE SOLUTION AND WRITE YOUR SOLUTION ON A PAPER27. Which of the following statement/s is/are always true about friction and its relationship to energy? I Frictional force is a non-conservative force that is path-dependent. II In solving problems involving friction, it is only important to determine the final and initial positions of the object. III Friction decreases the total mechanical energy of the object. a. I only b. I and II only c. I and III only d. None of the above
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