I have a linear actuator operating on an object that, when pressure acts against it, produces a force up to 4000 newtons. The linear actuator operates with a maximum speed of 11mm/s at no force and a minimum speed at maximum force of 8mm/s. Being a linear actuator the speed decrease linearly from 11mm/s to 8mm/s. Is there a way of calculating the time it will take the linear actuator to fully extend 1.7mm from 0 newtons to 4000 newtons? Is it the basic "suvat" equations: s=((u+v)/2)*t s=u*t+0.5*a*t^2 and just rearrange them for the vale you want?