An object moves along the x axis according to the equation x(t) = (2.70t2 - 2.00t + 3.00) m.
问题描述：
An object moves along the x axis according to the equation x(t) = (2.70t2 - 2.00t + 3.00) m.
(a) Determine the average speed between t = 1.70 s and t = 2.90 s.
(b) Determine the instantaneous speed at t = 1.70 s and at t = 2.90 s.
(c) Determine the average acceleration between t = 1.70 s and t = 2.90 s.
(d) Determine the instantaneous acceleration at t = 1.70 s and t = 2.90 s.
答
(a)10.42
(b)13.66 7.18
(c)5.4
(d)5.4 5.4