The position of an object moving in a straight line is given by the equation x = (3t^3 + 7t + 5) m, where t is in seconds. What is the object’s acceleration at time t = 5 seconds? ________ m/s^2
A、415;
B、232;
C、115;
D、90;
E、35;
F、42;G:230
发布时间：2025-07-02 21:19:29
