ned help finding the solution

Part A An object has a position given by r = [2.0 m + (4:00 m/s)t] i + [3.0m -(5.00 m/s?)t?] 7. where all quantities are in SI units. What is the magnitude of the acceleration of the object at time t = 2.00 s? O 10.0 m/s2 O 0.00 mis2 5:00 m/s2 O 12.0 m/s2 O' 8.00 mis2 Submit Request