Force and Motion

6.8C- Which two measurements are needed to determine the speed of an object?

• Position and time

• Distance and time

• Position and direction

• Distance and direction

6.8D- During a science experiment, a student dropped a metal ball from a height of 150 m. The graph shows the distance the metal ball traveled from its initial position to where it hit the ground.

What information does the graph give you about the speed of the metal ball over time?

• The ball travels at a constant speed.

• The speed of the ball increases over time.

• The speed of the ball decreases over time.

• e speed of the ball increases at first, and then decreases as time increases.

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6.8C- An airplane leaves New York to fly to Boston. It travels 1,000 km in 2 hours. What is the average speed of the airplane?

• 500 km

• 1000 hours

• 500 km/hour

• 5000 hours/km

6. 8CD- The graph below shows the distance a car traveled in 5 seconds while moving on a freeway.

What was the car’s average speed?

• 0 m/s

• 14 m/s

• 28 m/s

• 30 m/s

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6.8CD- Joanna’s family drove 360 km on a trip. The graph below represents their motion.

What was the average speed during the trip?

• 45 km/h

• 60 km/h

• 120 km/h

• 180 km/h

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NGSS.MS-PS3-1

The graph below represents the time and distance traveled by four different toy cars.

6.8CD- What was the average speed of car A?

• 6 ft/s

• 2 ft/s

• 3 ft/s

• 12 ft/s

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The graph below represents the time and distance traveled by four different toy cars.

6.8C- Which car went the furthest distance (ft)?

• Car A

• Car B

• Car C

• Car D

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The graph below represents the time and distance traveled by four different toy cars.

6. 8C- Which car traveled the longest amount of time (s)?

• Car A

• Car B

• Car C

• Car D

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6.8A- A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?

• It is lost as gravitational energy.

• It is destroyed as the ball moves.

• It is converted to kinetic energy

• It is used to make the ball slow down.

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NGSS.MS-PS3-5

Which picture of the rock has the LEAST amount potential energy and the GREATEST amount of kinetic energy? Read the answers carefully!

• Rock A

• Rock B

• Rock D

• Rock E

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