3. [-/3 Points] DETAILS LARCALC11 1.3.103.MI. MY NOTES ASK YOUR TEACHER Use the position function s(t) = -4.9t + 800, which gives the height (in meters) of an object that has fallen for t seconds from a height of 800 meters. The velocity at time t = a seconds is given by the following. lim s(a) - s(t) ta a- t Find the velocity of the object when t = 3. (Round your answer to one decimal place.) m/s Need Help? Read It Watch It Master It # Show My Work (Optional)