Speed & /velocity Assesment

During which second time interval did the object later, once again, travel in a positive direction?   

• 40-55 sec
• 10-15 sec
• 15-30 sec
• 30-40 sec

How far did the object travel between 15 and 30 seconds? How fast was it moving during this time interval?

• +60 m +4 m/s

• 60 m 4 m/s

• 40 m 4 m/s

• +40 m +4 m/s

Consider this displacement vs. time graph representing the motion of a bicyclist .

What is the average velocity of the bicyclist between 0 and 3 seconds?

• +3.3 m/s

• +5.0 m/s

• 3.3 m/s

• 5.0 m/s

This is a velocity vs. time graph of an object .

What is the velocity of the object at t = 3s?

• -2 m/s

• 0 m/s

• 1 m/s

• +2 m/s

The graph represents the motion of a car moving linearly. When is the car moving backwards?

• 0 s to 10 s
• 20 s to 40 s
• 40 s to 50 s
• 50 s to 60 s

Which slope shows the object is traveling quickly in a negative direction?

• A
• B
• C
• D

On a highway, a car is driven 80 km during the first hour of travel, 50 km during the next 0.50 hour, and  40 km in the final 0.50 hour. What is the car’s average  speed for the entire trip? 

• 45 km/h 
• 60 km/h 
• 85 km/h 
• 170 km/h 

A high-speed train in Japan travels a distance of 300 km in 3.60 x 10³ seconds. What is the average speed of this train? 

• 1.20 x 10^-2 km/s 
• 8.33 x 10^-2 km/s 
• 12.0 km/s 
• 83.3  km/s 

On a highway, a car is driven 80 km during the first hour of travel, 50 km during the next 0.50 hour, and  40 km in the final 0.50 hour. What is the car’s average  speed for the entire trip? 

• 45 km/h 
• 60 km/h 
• 85 km/h 
• 170 km/h 

A high-speed train in Japan travels a distance of 300 km in 3.60 x 10³ seconds. What is the average speed of this train? 

• 1.20 x 10^-2 km/s 
• 8.33 x 10^-2 km/s 
• 12.0 km/s 
• 83.3  km/s