Background question: A bicycle and rider have a combined mass of 75 kg. They freewheel down a slope whose maximum height is 6 meters above sea level. The slope is 20 meters long. At the end of the slope, the bicycle and rider are travelling with a velocity of 10 m/s. Calculate the work done against friction whilst descending the slope. Answer reached: mass = 75 kg max. height = 6 meters slope = 20 meters Vf = 10 m/s PE at start = KE at end + work done to overcome friction. mgh = 1/2mv2 + friction force x distance moved against friction. = 75 x 9.81 x 6 = 1/2 x 75 x 102 + f x 20 = 4414.5 = 3750 + 20f = 4414.5 - 3750 = 20f = 664.5 = 20f Force = 664.5/20 Force = 33.225N Question needing assistance with: Using the calculated values from the question above, calculate how far the bicycle will travel before coming to a stop if the surface of the road is the same as the slope. State why this distance would not be achieved in a real world experiment.