Chapter 2: Motion in 1D

What is the displacement of an object at rest?

• 0 m
• 1 m
• 9.8 m
• 9.81 m

What is velocity?

• The total distance traveled by an object

• The distance from start to end, including the direction

• How fast an object travels

• The speed at which an object travels plus its direction

In addition to displacement, which of the following must be used for a more complete description of an object's motion?

• Meters
• Kilograms
• Time
• Distance

What is the gravitational acceleration of a ball at the top of its trajectory?

• 9.81 m/s²; up

• 9.81 m/s²; down

• Zero

• Cannot be determined

What represents the slope on a position vs. time graph?

• Acceleration

• Displacement

• Speed

• Velocity

What is acceleration?

• It is the displacement.
• It is the velocity.
• It is the rate of change of the displacement.
• It is the rate of change of the velocity.

What happens to an object's motion when the velocity is positive and the acceleration is negative?

• The object slows down.
• The object speeds up.
• The object remains at a constant velocity.
• The object remains at rest.

What is the velocity at the top of the path when a ball is thrown into the air?

• 9.81 m/s; up

• 9.81 m/s; down

• 0 m/s

• Cannot be determined

What is the straight-line length between a starting point and an end point for a motion path with direction?

• Distance

• Displacement

• Speed

• Velocity

What is the length of the curved path taken by an object?

• Displacement

• Distance

• Speed

• Velocity