Speed, Velocity, and Acceleration: Lesson 1

What is the definition of average speed according to the passage?

• The distance an object travels per unit of time

• The time it takes for an object to travel a certain distance

• The speed of an object at a specific moment

• The rate of change of velocity

Which unit is commonly used for measuring speed when a larger unit of time or distance is needed?

• Miles per hour

• Meters per second

• Feet per second

• Inches per minute

How is average speed calculated?

• By dividing the distance traveled by the time taken

• By multiplying the distance traveled by the time taken

• By adding the initial and final speeds

• By subtracting the initial speed from the final speed

If a bus travels 500 miles in 10 hours, what is its average speed?

• 50 miles per hour

• 5 miles per hour

• 100 miles per hour

• 10 miles per hour

Why might a car not maintain a constant speed during a long trip?

• Due to roads with slower speed limits and traffic

• Because the car's engine might overheat

• Because the driver might get tired

• Due to changes in weather conditions

Tags

NGSS.MS-ESS2-5

What is one standard unit for speed mentioned in the passage?

• Meters per second

• Kilometers per hour

• Miles per hour

• Feet per second

Tags

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What is the main purpose of determining average speed according to the passage?

• To find out which mode of transportation is fastest

• To calculate the fuel efficiency of a vehicle

• To determine the shortest route

• To estimate the time of arrival

Average speed is calculated by dividing the ​ (a)   an object travels by the ​ (b)   it takes the object to move that distance. Average ​ (c)   is a rate of motion. This rate can be used to determine how fast an object moves.

• distance
• time
• speed

Julie decides to go on a short run in the morning. She runs 800 meters in 400 seconds.

Which choice shows how to calculate average speed?

• A

• B

• C

• D

​ (a)   is a rate of ​ (b)   . Average speed is calculated by ​ (c)   the ​ (d)   by the ​ (e)   it takes for the object to move that distance.

• Speed
• motion
• dividing
• distance
• time