What is the velocity in feet per second (fps) if it takes 7 minutes and 30 seconds for dye to travel 860 feet?

To determine the velocity in feet per second (fps), you need to first convert the total travel time into seconds and then divide the distance traveled by the time taken.

First, convert 7 minutes and 30 seconds into seconds. There are 60 seconds in a minute, so:

7 minutes = 7 × 60 = 420 seconds.

Adding the additional 30 seconds gives you a total time of:

420 seconds + 30 seconds = 450 seconds.

Now, you can calculate the velocity using the formula:

Velocity = Distance / Time.

The distance is given as 860 feet. Therefore, plug in the values:

Velocity = 860 feet / 450 seconds = 1.9111 fps.

When rounded to two decimal places, this gives you approximately 1.91 fps. This result directly corresponds to the correct answer, which reflects a proper understanding of how to convert time units and apply the formula for calculating velocity.