A 500 g block in the Figure below is pushed up the incline with an initial speed of 2.0 m/s. How far up the incline will it go before it stops if the coefficient of friction between it and the incline is 0.150 (Use the work-energy method only)?
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A block in the Figure below is pushed up the incline with an initial speed of . How far up the incline will it go before it stops if the coefficient of friction between it and the incline is 0.150 (Use the work-energy method only)?
![(a) A 500 g block is shot on the surface in FIGURE 3 with an initial speed of 0.5 ms−1. How far will it go if the coefficient of friction between it and the surface is 0.150? [3 marks] (b) A 0.25 hp motor is used to lift a load at the rate of 5.0 cms−1. Determine the mass of the load at this constant speed? [1 hp = 746 W] [3 marks] (c) At sea level, a nitrogen molecule in the air has kinetic energy of 6.2×10−21 J. Its mass is 4.7×10−26 kg. If the molecule could shoot straight up without striking other air molecules, how high would it rise? [2 marks]](https://www.doubtrix.com/uploads/editor/8844506183SExwnDCwBv.jpg)
