An Object Starts from Rest and Travels in a Straight

Multiple Choice

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s² for 3.0 seconds. It then reduces its acceleration to 1.0 m/s² for 5.0 additional seconds. The magnitude of the velocity at the end of the 5.0 second interval is

A) 6.0 m/s.
B) 18 m/s.
C) 8.0 m/s.
D) 4 m/s.
E) 11 m/s.