Unit 3 - Investigating Motion

The three cyclists shown below are all traveling at a speed of 13 m/s, but only the orange cyclist has a changing velocity. The orange cyclist has a changing velocity because the orange cyclist –

• A. needs a larger amount of force to move.

• B. is traveling on a curved section of the road.

• C. is behind the other cyclists in the race.

• D. is accelerating faster to catch up to the other cyclists.

Which graph BEST represents an object that was moving at a constant speed?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Examine the graph here showing two people moving a certain distance in a matter of twenty-five seconds. Which statement describes the speed of the two people (one shown in red and one shown in blue) at the twenty-second time point?

• The person indicated by the blue line moved at a rate of 45 meters per second while the person indicated by the red line moved at a rate of 40 meters per second.

• The person indicated by the blue line moved at a rate of 3 meters per second while the person indicated by the red line moved at a rate of 2 meters per second.

Tags

NGSS.MS-PS3-1

An oceanic vessel surveys the ocean floor using ultrasonic waves. The ocean beneath the boat is 4600 meters deep. If the ultrasonic wave travels to the bottom of the ocean and back to the boat in 6 seconds, what is its average speed?

• 770 m/s

• 1533 m/s

• 7700 m/s

• 27600 m/s

Tags

NGSS.HS-PS4-1

Carol and Juan were playing with Carol's new train set. They pushed the trains around the track. They tried four different sections of track. Which statement is true?

• The train on Track 3 was slower than the train on Track 1.

• The train on Track 1 was faster than the train on Track 2.

• The trains on Tracks 1, 2, and 3 all had the same average speed.

• The train on Track 2 was slower than the train on Track 4.

Tags

NGSS.MS-PS3-1

Examine the table here with the distances and times recorded for five different vehicles. What is the average speed for Vehicle E in km/h?

• 9 km/h

• 53 km/h

• 40 km/h

• 35 km/h

Tags

NGSS.MS-PS3-1

An airplane traveled from Boston to Seattle, which is approximately 3000 miles. The flight was in the air traveling from 7:00 am until 1:00 pm. Calculate the speed of the airplane that traveled this distance in that timespan.

• 50 m/h

• 450 m/h

• 500 m/h

• 600 m/h

A truck driver has four sections on the journey to deliver a truckload of goods to the warehouse. Using information from the table here, calculate the average speed for each section of the journey and select the section of the trip where the driver had the greatest average speed.

• Segment 1

• Segment 2

• Segment 3

• Segment 4

A baseball player standing on first base runs to second base and then third on one play. The total time it takes to run these two bases is 20 seconds. Calculate the speed of this baseball player in feet per second.

• 9 feet per second

• 18 feet per second

• 60 feet per second

• 90 feet per second

What is the main difference between the speed and the velocity of an object?

• Speed has no direction associated with it, while velocity has a specific direction.

• Speed has a direction associated with it, while velocity has no specific direction.

• Velocity is the change in distance over time, while speed is the change in velocity over time.

• Velocity is the changes in speed over time, while speed is the change in distance over time.