6.8D Students slid a small wood block along a flat tabletop for a distance of 1.6 m. The data show the motion of the block of wood. Which graph displays the motion of the wood block?

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Tags

NGSS.MS-PS3-1

8.6C Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?

• The car with the smaller mass will require less force to stop than the car with the larger mass.

• B The car with the larger mass will maintain its velocity while traveling down the hill.

• The car with the smaller mass will take longer to stop than the car with the larger mass.

• The car with the larger mass will have less inertia than the car with the smaller mass.

Tags

NGSS.MS-PS2-2

6.8B The picture shows a car on a race track. If the car was in motion on the race track, how would the car be affected if the force of friction and the force from the motor were equal?

• The car would maintain constant motion.

• The car would come to a complete stop.

• The car would increase in speed.

• The car would decrease in speed.

Tags

NGSS.MS-PS2-2

8.6C NASA’s space shuttle program was active from 1981 until 2011. The photograph shows rockets carrying a space shuttle off the launchpad. How can Newton’s law of action–reaction best be applied to explain the movement of a rocket?

• As the fuel burns, gases push against the rocket, moving it upward.

• As the fuel burns, gases move out of the rocket and reduce air resistance.

• As the fuel burns, the mass of the rocket decreases.

• As the fuel burns, the rocket moves faster.

Tags

NGSS.MS-PS2-1

8.6A A student used a video camera to record another student dropping a marble through water in a graduated cylinder. The students watched the video in slow motion and made the observations shown below. During which part or parts of the marble’s fall did the marble experience unbalanced

forces?

• Part 1 only

• Parts 1 and 2 only

• Part 3 only

• Parts 2 and 3 only

Tags

NGSS.MS-PS2-2

6.8C A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below. How many seconds did it take for the ball to travel 30 m during Kick 3?

• 0.5 s

• 1.0 s

• 1.5 s

• 2.0 s

6.8C A bus travels 20 km in 30 minutes. What is the average speed of the bus?

• 20 km/h

• 30 KM/H

• 40 KM/H

• 50 KM/H

Tags

NGSS.MS-PS3-1

8.6C A student lets a toy car roll four times down a ramp that is 1 m long. Each time the student covers the surface of the ramp with a different material. The student measures the time it takes the car to roll down the ramp and records the results in the table below. Which of these would be the best conclusion based on the data in the table?

• Different surfaces affect how fast a toy car accelerates.

• Different toy cars travel at different speeds.

• Gravity has little effect on the speed of toy cars on different surfaces.

• Air resistance is the greatest factor in limiting the acceleration of different toy cars.

Tags

NGSS.MS-PS2-2

6.8D A student runs two times around a running path at a local park. Each lap is 3 km. The student completes the first lap in 20 minutes. The student then sits on a bench and rests for 5 minutes before completing the second lap in 25 minutes. Which graph best represents the student’s motion?

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6.7A The picture shows a wind turbine used to generate electricity. Which of the following is an advantage of using wind turbines to generate energy for a city?

• Wind turbines are quiet and improve scenic areas.

• Wind turbines are suitable for any location in the country.

• Wind turbines require little space and produce continuous power.

• Wind turbines do not emit carbon dioxide and do not require sunshine.

Tags

NGSS.MS-ESS3-4