nkazmirski968 nkazmirski968 29-05-2023 Physics contestada Question 3 The position of an object as a function of time is given by z(t) = (4.1m/s³)t³ - (4.0m/s²)t² + (55m/s)t - 7.0m Part A Find the instantaneous acceleration at t = 3.4s Express your answer