1. The problem statement, all variables and given/known data The position of an object of mass m is given by: http://imageshack.us/photo/my-images/62/20110920161443.jpg/ Find expression for the velocity and the acceleration and deduce the force components acting on the particle. 2. Relevant equations W = vr, v = u+at , f = ma v = d/t 3. The attempt at a solution I was thinking of finding out the magnitude of the position (by squaring them followed by square root),so then I could divide position by time to get velocity then use SUVAT equation but so far I have achieved nothing sensible.. I would like to know am I on the right track ?