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Practice Exercises
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Exercise 1:
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In a boat race, Dan drove his motorboat over the
1000-meter course from start to finish in 40 seconds.
What was Dan's average speed during the race?
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Exercise 2:
It takes Serina 0.25 hour to drive to school. Her route is
16 km long. What is Serina's average speed on her drive.
to school?
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Exercise 3:
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In a competition, an athlete threw a flying disk
139 meters through the air. While in flight, the disk
traveled at an average speed of 13.0 m/ s. How long
did the disk remain in flight?
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Exercise 4:
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If you shout into Grand Canyon, your voice travels at
the speed of sound (340 m/s) to the bottom of the
canyon and back, and you hear an echo. How deee is
the Grand Canyon in a spot where you can ~ar your
echo 5.2 seconds after you shout?
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Exercise 5:
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Sound travels much faster in water than air. It takes
4.2 seconds for the sound of an explosion to travel
underwater to a diver 6,006 m away. What is the speed
of sound in water?
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Physical Science Math Skills and !'roblem Solving Workbook
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