Answer: A) 20 miles per hour East
Explanation:
We know that the distance is 10 miles (to the east)
and the time is 30 minutes, knowing that an hour has 60 minutes, we can write this as:
30 minutes = ((30 min)/(60 min) )* 1h = 1/2 hours = 0.5 hours.
Now, the velocity is defined as the distance traveled divided by the time needed to travel that distance (and remember that velocity is a vector, so this must have a direction, in this case, the direction is east)
v = distance/time = 10miles/0.5 hours = 20 mi/h
the velocity is 20 miles per hour to the east.
The correct option is A
