Motion: Speed Review

Which best describes the motion of the object shown in this graph?

• It is moving at a constant speed

• It has a changing speed

• It is slowing down

• It is stopped

Tags

NGSS.MS-PS3-1

You walk to 20 m, took a book from a table, & walked back to your seat. What is your displacement?

• 0 m

• 20 m

• 40 m

• 10 m

Which value below represents an object's velocity?

• 30 m/s

• 30 m

• 30 m/s² east

• 30 m/s east

Which of the objects below would make a good reference point?

• a jogger

• a tree

• a bird flying above you

• a car on the highway

The slope of the distance vs. time graph is defined as

• the speed

• starting position

• acceleration

• direction

Which graph matches this story: Amelia goes on a walk to the park past her house. She sees a friend there and stops to chat before she runs back home.

• 
• 
• 
• 

Which graph shows a car slowing down?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The first successful flight was taken by Orville Wright on December 17, 1903 in North Carolina. Orville flew his plane 37 meters in 12 seconds. How fast was this flight? $v=\frac{d}{t}$  

• 3.08 m/s

• 3.08 mph

• 444 m/s

• 0.32 m/s

Tags

NGSS.MS-PS3-1

If the speed of sound during a thunderstorm is 330 m/s, how long does it take for the sound of thunder to travel 1485 m?  $v=\frac{d}{t}$  

• 45 s

• 490,050 s

• 4.5 s

• 0.22 s

Tags

NGSS.MS-PS4-1

You are driving a speedboat down the world’s longest river, the Amazon in South America, at a speed of 90 km/hr. If it takes you 77.68 hours to reach the end, how long is the Amazon river in kilometers?  $v=\frac{d}{t}$  

• 1.16 km

• 0.86 km

• 6,991.2 km

• 167.68 km