Forces and Motion (TEKS 7.7) Test A

Jensen investigated a battery-operated car’s motion by graphing the distance it traveled every 10 seconds for 30 seconds. He then calculated the car’s average speed. A graph of his data is given below.

What is the average speed of the toy car?

• 0.2 m/s

• 0.2 s/m

• 5 m/s

• 5 s/m

• 1 m/s

Tags

NGSS.MS-PS3-1

Kristina investigated the average speeds her father drove when he picked her up after school, took her to soccer practice, and then went home in kilometers per hour (km/hr). She constructed this data table. What are the average speeds Kristina calculated for each part of her trip? Move ONE correct answer to each box. Not all answers will be used.

a

b

c

15 km/hr

12 km/hr

20 km/hr

5 km/hr

Chloe calculated the average speed she walked one afternoon. First, she walked 0.5 kilometer to a park, which took her 0.1 hour. Then, she walked to an ice cream shop 1.5 km from the park, which took her 0.4 hour. Then she walked 2.0 km back to her house in 0.5 hour.

What is Chloe’s average speed for the entire trip?

• 5.0 km/hr
• 6.0 km/hr
• 3.8 km/hr

• 4.0 km/hr

• 2.0 km/hr

Camila wants to investigate the average speed of a train in the Dallas Area Rapid Transit system as it travels from the beginning of a route to the end. What pieces of information does Camila need to collect?

• Number of stops along the route
• Total weight of the train and number of passengers
• Total distance of the route and total time taken to travel that distance.
• Type of train and its color
• Weather conditions during the journey

It takes one hour for an airplane to travel north for 750 kilometers (km). What is the airplane’s average velocity?

• 750 km

• 750 km/hr

• 750 km north

• 750 km/hr north

• 750 hr/km north

Mr. Palmer drove 40 kilometers east in 1 hour and then 50 kilometers west during the next hour. How can Mr. Palmer’s motion be described?

The total distance Mr. Palmer traveled is ​ (a)   km. His displacement is ​ (b)   km. Mr. Palmer's average speed is ​ (c)   km/hr and the value of his average velocity is ​ (d)   km/hr ​ (e)   .

• 90
• 10
• 45
• west
• east
• 5

Amanda and James measure the speed of two cars on the same road. Car A is traveling north at 40 km/h and Car B is traveling south at 40 km/h.

Which statement correctly compares the speed and velocity of the two cars?

• The velocities are different because the cars are moving in different directions but at the same speed.

• The velocities are different because the cars are moving in different directions and at different speeds.

• The velocities are the same because both cars have the same mass and are moving at the same speed.

• The velocities are the same because both cars are moving on the same road and with the same speed.

Marc and Ying rode in a car with Ying’s father from Ying’s house to the grocery store and then back to Ying's house. They made a distance-time graph to measure the motion of the car. How does the graph describe their motion?

Move ONE correct answer into each box. Not all answers will be used.

The graph shows that they drove to the store at a ​ (a)    speed and returned home at a ​ (b)   speed. Time at the store is indicated by the ​ (c)   part of the plot.

• varied
• constant
• flat
• slope

Tags

NGSS.MS-PS3-1

Aria and Tyler go to school on the bus. They travel 2 kilometers in 4 minutes and then stop to pick up more students. They begin again traveling another 3 kilometers in 2 minutes. They stop one last time and then travel 3 more kilometers to school.

Which distance-time graph BEST records the motion they took to school on the bus?

• 
• 
• 
• 

Jake and Dana analyze a graph and look for patterns to describe their trip.

Which statements correctly describe the speed and motion of their trip? Select THREE correct answers.

• They were stopped along segment B.

• Their fastest speed was along segment C.

• Their slowest speed was along segment D.

• Their speed along segment B was 5 km/h.

• heir speed along segment A was 15 km/h.

Tags

NGSS.MS-PS3-1