Heartbeats and Time Conversions

The video tutorial explains how to calculate the number of heartbeats per year and over a lifetime if the average heart rate is 72 beats per minute. It demonstrates converting beats per minute to beats per year using unit fractions and then extends this calculation to determine the total heartbeats over 75 years. The tutorial highlights the significant workload of the heart over a lifetime.

What is the average heart rate used in the problem?

• 90 beats per minute

• 80 beats per minute

• 72 beats per minute

• 60 beats per minute

What is the first step in converting beats per minute to beats per year?

• Convert minutes to hours

• Convert days to weeks

• Convert hours to days

• Convert minutes to seconds

How many minutes are there in an hour?

• 60

• 45

• 90

• 30

What is the unit fraction used to convert hours to days?

• 36 hours per day

• 48 hours per day

• 24 hours per day

• 12 hours per day

How many days are considered in a year for this calculation?

• 365

• 360

• 364

• 366

What is the total number of heartbeats per year calculated in the video?

• 40,000,000

• 37,843,200

• 50,000,000

• 31,536,000

What is the purpose of using unit fractions in the conversion process?

• To simplify calculations

• To ensure units cancel out correctly

• To make the process faster

• To increase accuracy

How many years is the lifespan considered in the second part of the problem?

• 75

• 80

• 85

• 70

What is the total number of heartbeats over 75 years?

• 2,838,240,000

• 3,000,000,000

• 2,500,000,000

• 2,000,000,000

What is the main takeaway from the video regarding heartbeats?

• Heartbeats are not important

• The heart works hard over a lifetime

• The heart beats very few times over a lifetime

• Heart rate is constant for everyone