7.7(A) - Calculating Average Speed Flashcard

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken.

Front

How do you calculate average speed?

Back

Average speed = Total distance / Total time.

Front

If a vehicle travels 150 km in 2 hours, what is its average speed?

Back

75 km/h

Front

A delivery truck travels 150 kilometers in 2 hours and then 100 kilometers in 1.5 hours. What is the total distance?

Back

Total distance = 150 km + 100 km = 250 km.

Front

A train travels 240 kilometers in 4 hours and then 120 kilometers in 2 hours. What is the total time?

Back

Total time = 4 hours + 2 hours = 6 hours.

Front

What is the average speed of a train that travels 240 km in 4 hours and 120 km in 2 hours?

Back

Average speed = Total distance (360 km) / Total time (6 hours) = 60 km/h.

Front

If a swimmer covers 2 kilometers in 40 minutes, how do you convert minutes to hours?

Back

To convert minutes to hours, divide by 60. 40 minutes = 40/60 = 2/3 hours.

Front

What is the average speed of a swimmer who swims 2 km in 40 minutes?

Back

Average speed = 2 km / (2/3 hours) = 3 km/h.

Front

A hiker walks 12 kilometers in 3 hours. What is the average speed?

Back

Average speed = 12 km / 3 hours = 4 km/h.

Front

If a runner completes a 10 km race in 50 minutes, how do you find the average speed in km/h?

Back

Convert 50 minutes to hours: 50/60 = 5/6 hours. Average speed = 10 km / (5/6 hours) = 12 km/h.