Question

An object moving north with an initial velocity of 14 m/s accelerates 5m/s for 20 seconds what is the final velocity of the object

Answer 1

The velocity of an object with constant acceleration is the following:

$$v = v_0 + at$$

where $v_0 = 14m/s$ is the initial veloctiy, $a = 5m/s^2$ is its acceleration, $t = 20s$ is the time of acceleration. Thus, have:

$$v = v_0 + at = 14m/s + 5m/s^2\cdot 20s = 114 m/s$$

Answer. 114 m/s.