Answer:
The average speed of the car is 14.4m/s
Explanation:
First, you have to calculate total distance that the car travels. Given that the distance of each gap is 0.8m apart so you have to calculate how many gaps in between then multiply it by 0.8m :
1 gap = 0.8m
9 gaps = 0.8 × 9
= 7.2m
Next, you can calculate the average speed of a car using the formula, S = D/T where D is the distance and T is the time taken :
D = 7.2m
T = 0.5s
S = 7.2/0.5
= 14.4m/s
(Correct me if I am wrong)