Answer:
10.27 feet/sec.
Step-by-step explanation:
The distance traveled by the car, d in feet, is given by the function [tex]d = 1.1t^{2}[/tex] .......... (1), where t is the time in seconds.
So, at t= 2 sec, from equation (1) we get d = 1.1 × 4 = 4.4 feet.
Again, at t = 5 sec, we get d = 1.1 × 32 = 35.2 feet.
Now, average speed of the car from t = 2 sec. to t = 5 sec. will be give by
[tex]\frac{\textrm {Total distance traveled}}{\textrm {Total time spent}}[/tex]
= [tex]\frac{35.2 - 4.4}{5 - 2} = 10.27[/tex] feet/sec. (Answer)
