Velocity, Displacement, and Time

Which of the following does not belong?

• time

• speed

• distance

• velocity

Which of the following situations represents a positive displacement of a carton? Assume positive position is measured vertically upward along a y-axis.

• Delivery person lowers carton onto an dolly in an elevator

• When the elevator doors open, the delivery person lifts the dolly over the threshold of the elevator

• The delivery person pushes the dolly to the back of the elevator while pressing a floor button.

• The door closes and the elevator moves from the 10th to the 4th floors

What is the correct description of any change of position farther to the right of zero?

• positive displacement

• positive distance

• positive position

• positive change of displacement

A dog walks from +4 m to +2 m. Which of the following statements is true about the dog’s motion?

• x_i = +2 m

• x_f = +2 m

• v_avg = 2 m/s

What is the maximum negative displacement a dog could have if it started its motion at +3 m?

• +7 m

• -3 m

• +3 m

• -7 m

Which of the following scenarios shows zero displacement?

• Running 3 miles

• Road Trip to Tennessee

• A roundtrip flight

• Sliding down a slide

A group of astronauts board a shuttle in Houston, TX after being photographed for a magazine article. They are able to orbit the moon and return home, but must land in California. The same photographer is there to take pictures after they land. The astronauts return to Houston to report on their findings. Who had the greatest displacement?

• The astronauts

• The photographer

• They have equal displacements

• More information is needed

For the five time intervals shown, during how many intervals does the dog have the same average VELOCITY?

• 0

• 1

• 2

• 3

For the five time intervals shown, during how many intervals does the dog have the same average SPEED?

• 0

• 1

• 2

• 3

What is the dog's displacement?

• 4.0 m

• 3.0 m

• -1.0 m

• 1.0 m