seconds. An object moves along the x axis according to the equation x = 2.75t - 2.00t + 3.00, where x is in meters and t is in (a) Determine the average speed between t = 1.60 s and t = 3.20 s. 11.2 m/s (b ) Determine the instantaneous speed at t = 1.60 s. 6.8 m/s Determine the instantaneous speed at t = 3.20 s. 15.6 m/s (c) Determine the average acceleration between t = 1.60 s and t = 3.20 s. 5.69 * m/s2 (d) Determine the instantaneous acceleration at t = 1.60 s. 4.25 * m /s2 Determine the instantaneous acceleration at t = 3.20 s. 4.88 x m/s2 (e) At what time is the object at rest? 0.36