Question

If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration, what's the average velocity of the body?

Answer 1

Average velocity is found by the following formula:

$v_{average} =  \frac{v_f+v_i}{2}$

$v_i = 13 \\ v_f = 30 \\ v_{average} =  \frac{30+13}{2} =  \frac{43}{2} = 21.5  \frac{m}{s}$

Answer 2

The Correct answer to this question for Penn Foster Students is: 21.5 m/s