The data for a ball and spring sensor is given below: mass of ball = 0.12kg spring constant = 30Nm-1 distance to be compressed = 3.6cm Calculate the force nessary to compress spring by 3.6cm. The deceleration which the force in (the 1st question) would cause in a mass of 0.12kg. i seem to find this question quite tricky, mainly becasue im not sure of what equation to use! please me on this one!!