Answer:
the acceleration of the car is 10 mi/h^2.
Explanation:
We can use the following formula to calculate the acceleration of the car:
a = (v_f - v_i) / t
where:
a = acceleration
v_f = final velocity (in this case, 45 mi/h)
v_i = initial velocity (in this case, 25 mi/h)
t = time (in this case, 2 hours)
Substituting the values into the formula, we get:
a = (45 mi/h - 25 mi/h) / 2 h
a = 20 mi/h / 2 h
a = 10 mi/h^2
Therefore, the acceleration of the car is 10 mi/h^2.