Answer:
[tex]\boxed {\tt a \approx4.48 \ m/s^2}[/tex]
Explanation:
Acceleration can be found by dividing the change in velocity over the time.
[tex]a=\frac{\Delta v}{t}[/tex]
The change in velocity can be found by subtracting the final velocity by the initial velocity.
[tex]\Delta v= final \ velocity - initial \ velocity[/tex]
The final velocity is 17.9 meters per second.
The initial velocity is 4.47 meters per second.
[tex]\Delta v=17.9 \ m/s-4.47 \ m/s[/tex]
[tex]\Delta v=13.43 \ m/s[/tex]
The change in velocity is 13.43 meters per second and the time is 3 seconds.
[tex]a=\frac{13.43 \ m/s}{3 \ s}[/tex]
Divide.
[tex]a=4.47666667 \ m/s^2[/tex]
[tex]a \approx4.48 \ m/s^2[/tex]
The acceleration is about 4.48 meters per seconds squared.
