The distance r, measured in metres, of a downhill skier from a fixed point is measured at the following timest + 0 0.25 0.5 0.75 1 1.25 1.5 0 4.3 10.2 17.2 26.2 33.1 39.1 Use a central difference Och) to approximate the skier's velocity and acceleration at the time t =1.25 Give your answers to 1 decimal place. Recall that given the distance function x(t), the velocity and acceleration functions are x'(t) and x"(t) respectively. Your first answer is is velocity and second is acceleration (eg 12.3 and 4.5), Use a "dot" for your decimal point. No need to put in the unit of measurement