To determine the acceleration of the car, we can use the kinematic equation for motion with constant acceleration:
\[
d = v_0 t + \frac{1}{2} a t^2
\]
where:
- \(d\) is the distance traveled (110 m),
- \(v_0\) is the initial velocity (0 m/s, since the car starts from rest),
- \(t\) is the time (5.21 s),
- \(a\) is the acceleration (which we want to find).
Since the initial velocity \(v_0\) is 0, the equation simplifies to:
\[
d = \frac{1}{2}