Answer:
Joanna will finish her journey at approximately 2:18 pm.
Step-by-step explanation:
We can use the formula:
distance = speed x time
to solve this problem.
First, we need to convert the average speed from m/s to miles per hour (mph) so that it is in the same unit as the distance traveled. We can do this by multiplying the speed in m/s by the conversion factor of 2.23694:
average speed = 13 m/s x 2.23694 = 29.08 mph
Now we can plug in the distance and average speed into the formula and solve for time:
distance = speed x time
70 miles = 29.08 mph x time
Solving for time:
time = distance / speed
time = 70 miles / 29.08 mph
time = 2.41 hours
Therefore, Joanna will finish her journey 2.41 hours after she leaves home at 11:50 am.
To find out the finishing time, we can add 2.41 hours to the starting time of 11:50 am using 12-hour clock notation:
11:50 am + 2.41 hours = 2:18 pm (rounded to the nearest minute)