Speed, Distance and Time PRACTICE

A winner of the Indianapolis 500 auto race completed the 806.5 kilometer race in 2.98 hours. What was the driver’s average speed during the race?

• 270.6 km/hr

• 270.6 mph

• .0039 km/hr

• 2403 mph

Tags

NGSS.MS-PS3-1

Different animal species show a tremendous range of variation in their speed of movement. The fastest land animal, the cheetah, can travel 100.0 km/h. In contrast, the slowest animal, a species of sea crab, has an average speed of just 5.7 km/year. How long would it take the sea crab to travel 100.0 km?

• 17.5 years

• 17.5 km

• 570 years

• 570 km/yr

Tags

NGSS.MS-PS3-1

You usually see lightning before you hear thunder, because light travels faster than sound. Josh saw a flash of lightning and heard the thunder 6 seconds later. Sound travels at a speed of 340 m/s in air. How far away was Josh from the lightning?

• 2040 m

• 2040 m/s

• 56.6 m

• 56.6 m

In a boat race, Tucker drove his motorboat over the 1000-meter course from start to finish in 40 seconds. What was Tucker’s average speed during the race?

• 25 m/s

• 25 mph

• 0.04 m/s

• 40000 m

Tags

NGSS.MS-PS3-1

It takes Hayleigh 0.25 hour to drive to school. Her route is 16 km long. What is Hayleigh’s average speed on her drive to school?

• 17.8 m/s

• 64 km/h

• 4 m/s

• 4 km/h

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?

• 10.7 seconds

• 10.7 m/s

• 1807 seconds

• 0.09 m/s

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 deep is the Grand Canyon in a spot where you can hear your echo 5.2 seconds after you shout (NOTE: the time represents a ‘round trip’ for the sound)?

• 884 m

• 884 m/s

• 1768 m/s

• 65.3 m

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

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?

• 5148 km/h

• 5148 mph

• 1430 m

• 1430 m/s