The speed of an object is given by v= 5.00 t² + 4.00 t, where v is in m/s and t is in s. What is the acceleration of the object at t = = 2.00 s?
а. 14.0 m/s²
b. 5.00 m/s²
c. 9.00 m/s²
d. 24.0 m/s²
e. 10.0 m/s²