A homing pigeon starts from rest and accelerates uniformly at + 4.00 m/s squared for 10.0 seconds. What is its velocity after the acceleration?

' + 4 m/s² ' means that the pigeon's speed is 4 m/s greater every second.

Starting from zero speed, after 10 seconds, its speed is

(10 x 4m/s) = 40 m/s.

We can't say anything about its velocity, because we have

no information regarding the direction of its flight.