The second lap that Caroline ran lasted 10.3 minutes.
Speed is the ratio of distance to time taken. It is given by:
Speed = distance / time
Since the distance of the lap is 1.2 km. The second lap was at an average speed of 7 km/h. Hence:
7 = 1.2 / time
time = 10.3 minutes
The second lap that Caroline ran lasted 10.3 minutes.
Find out more on speed at: https://brainly.com/question/10113134