Noah, Anika, and Aria are playing a game of catch in a straight line. If we consider the starting point of the ball as the initial position and the point where the ball is caught as the final position, which of the following is true for the displacement of the ball?

• 1. It is always equal to the distance the ball moved between its initial and final positions.

• 1. It is both the straight line distance the ball moved as well as the direction of its motion.

• 1. It is the direction the ball moved between its initial and final positions.

• 1. It is the straight line distance the ball moved between its initial and final positions.

Benjamin decided to go on a bike ride. He started from his house and rode west for 50 miles. After a short break, he turned around and biked back east for 80 miles. What is Benjamin's net displacement from his starting position?

• 1. 130 miles

• 1. 30 miles east

• 1. 30 miles west

• 1. Cannot be determined from the information given

Henry, David, and Jackson are astronauts. If their space shuttle orbits Earth once, what is the shuttle’s distance traveled and displacement?

• 1. Distance and displacement both are zero.

• 1. Distance is circumference of the circular orbit while displacement is zero.

• 1. Distance is zero while the displacement is circumference of the circular orbit.

• 1. Distance and displacement both are equal to circumference of the circular orbit.

Maya, Abigail, and Charlotte decided to have a friendly bicycle race along a straight path in their neighborhood. Maya traveled 95m in 27s, Abigail traveled 87m in 22s, Charlotte traveled 106m in 26s. Their friend, Cyclist 4, who also joined the race, traveled 108m in 24s. Who among them traveled with the greatest average speed?

• 1. Maya

• 1. Abigail

• 1. Charlotte

• 1. Cyclist 4

Tags

NGSS.MS-PS3-1

Nora, Charlotte, and Anika are trying to calculate the displacement of a car that traveled with an average speed of 23 m/s for 82 s. Which of the following could NOT have been the car's displacement?

• 1. 1,700 m east

• 1. 2,000 m west

• 1. 1,600 m north

• 1. 1,500 m south

Benjamin and Evelyn are observing a straight line graph of position vs. time for Emma's car. What does the slope of this graph represent?

• 1. Velocity

• 1. Displacement

• 1. Distance

• 1. Acceleration

Priya is timing Benjamin's run. Using the graph of his run, what is Benjamin's velocity from 4 to 10 seconds?

• 1. –3 m/s

• 1. 0 m/s

• 1. 1.2 m/s

• 1. 3 m/s

Tags

NGSS.MS-PS3-1

Benjamin goes bowling with his friends and sends his bowling ball straight down the center of the lane, getting a strike. The ball is brought back to the holder mechanically. What are the ball’s net displacement and distance traveled?

• 1. Displacement of the ball is twice the length of the lane, while the distance is zero.

• 1. Displacement of the ball is zero, while the distance is twice the length of the lane.

• 1. Both the displacement and distance for the ball are equal to zero.

• 1. Both the displacement and distance for the ball are twice the length of the lane.

Noah drove to the nearest hospital to visit his friend Anika with an average speed of v m/s in t seconds. After the visit, if he drives back home on the same path, but with an average speed of 3v m/s, how long would it take for Noah to return home?

• 1. t/6

• 1. t/3

• 1. 3t

• 1. 6t

Elijah, Kai, and Zoe are observing a toy car on a track. They notice that the car's speedometer reads zero. What can they infer from this observation?

• 1. The toy car is moving in a straight line with a constant velocity.

• 1. The toy car is moving at a constant speed.

• 1. The toy car is either at rest or it has returned to its starting point on the track.

• 1. The toy car is moving in a straight line without changing its direction.