Average time Mass pieces Net force 9.215 7695 (show Fig calculations) 908 190 *0, 29 N 9D0 ±0,49 2 0,08194 =0, 784 1 2 (6) Axx 5. Interpretation: 1. Calculate the acceleration for each of the three forces Use equations of motion. Show all formulae and substitutions. Draw a neat graph (to scale) showing the relationship between the dependant 10+ (a)/2.1) (7) 3 2 (4) 3 and independent variables 3 Explain the relationship represented in the graph. Dely proportional (2) 2 4 Calculate the gradient of the graph Me h-y (2) 3 2 5. Write down the quantity represented by the gradient of the graph? (1) 3 6. Calculate the mass of the trolley using the gradient of the graph. (2) 4 Give a reason why the track should be slightly lifted at one end. (1) 2 7.1 7.2 7.3 Draw a free body diagram to show which forces act on the trolley. Calculate the coefficient of friction between the trolley and the track if you measure the angle at which the track is lifted to let the trolley move at a constant velocity if there is NO string Evaluate the importance of lifting the track at one end. a (4) (3) 2/3​