Question

A car travels 10 miles East in 30 minutes. What is its velocity in miles per hour? A) 20 miles per hour East B) 3 miles per minute East C) 0.333 miles per hour East D) + or - 20 miles per hour depending on direction

Answer 1

The right answer is 20 miles per hour East

Answer 2

Answer: A) 20 miles per hour East

Step-by-step 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