1. The problem statement, all variables and given/known data I'm only trying to answer the maximum deceleration possible question, not the rest. 2. Relevant equations Not really sure which equations are applicable, I know the Maximum deceleration of a body in general will be a = μ*g. Although I would think that moments need to be taken into account for this question. 3. The attempt at a solution I've had two trains of though with this question, the first was just assuming that between using both breaks, the maximum deceleration possible could be achieved and so we get: a = (9.81*0.8) = 7.848 m/s2 Not a very engineering solution though and I know it's probably not the correct solution. I would try to do it with moments, calculating the friction using each and both of the breaks, and then take moments about the axle of the front wheel, but I'm missing measurements to allow me to get these moments. I know the maximum acceleration with the front break only is given by a = g* (distance from COM to front wheel/ height of COM). i.e. a = (9.81 * (0.635/1.143)) = 5.45 m/s2 I just want to know how I should go about this problem more than anything. Thanks.