Heart Rate Calculations and Conversions

The video tutorial explains how to calculate heart rate in different units: per minute, per hour, and per second. Starting with a given rate of 624 beats in 8 minutes, the tutorial demonstrates how to convert this to beats per minute by dividing. It then shows how to convert beats per minute to beats per hour using multiplication and unit fractions. Finally, it explains how to convert beats per minute to beats per second using division. The tutorial emphasizes understanding unit conversions and using mathematical operations to find unit rates.

What is the initial problem presented in the video?

• Converting beats per second to beats per minute.

• Calculating the number of beats in 8 minutes.

• Determining the heart rate per minute, hour, and second.

• Finding the total number of beats in an hour.

How do you calculate the heart rate per minute from 624 beats in 8 minutes?

• Multiply 624 by 8.

• Subtract 8 from 624.

• Divide 624 by 8.

• Add 624 and 8.

What is the heart rate per minute if 624 beats are counted in 8 minutes?

• 78 beats per minute

• 74 beats per minute

• 76 beats per minute

• 80 beats per minute

How can you convert beats per minute to beats per hour?

• Subtract 60.

• Add 60.

• Multiply by 60.

• Divide by 60.

What is the heart rate per hour if the rate is 78 beats per minute?

• 4,800 beats per hour

• 4,680 beats per hour

• 4,700 beats per hour

• 4,600 beats per hour

How do you convert beats per minute to beats per second?

• Subtract 60.

• Multiply by 60.

• Divide by 60.

• Add 60.

What is the heart rate per second if the rate is 78 beats per minute?

• 1.5 beats per second

• 1.3 beats per second

• 1.2 beats per second

• 1.4 beats per second

What mathematical operation is used to find the heart rate per second from beats per minute?

• Addition

• Division

• Subtraction

• Multiplication

What is the purpose of using a unit fraction in these calculations?

• To increase the value of the rate.

• To change the units while keeping the value the same.

• To decrease the value of the rate.

• To add more complexity to the calculation.

What is the final heart rate per second calculated in the video?

• 1.5 beats per second

• 1.2 beats per second

• 1.3 beats per second

• 1.4 beats per second