Quiz: Position vs Time Graphs

1. What is the definition of a scalar?

• A quantity with both direction and magnitude.
• A quantity with only magnitude.
• A quantity with only direction.
• A quantity that doesn't have direction or magnitude.

2. What is the definition of a vector?

• A quantity with both direction and magnitude.
• A quantity with only magnitude.
• A quantity with only direction.
• A quantity that doesn't have direction or magnitude.

3. What is the definition of velocity?

• Where an object is at a certain time.
• The time an object is at a position.
• A vector quantity saying how fast an object is going and in what direction.
• A scalar quantity saying only how fast an object is going.

4. The slope of a position vs time graph is...

• The displacement of the object.
• The time interval of the object.
• The velocity of the object.
• The acceleration of the object.

5. What is on the y (vertical) axis on this Position vs time graph? Assume the positive direction is right and the negative direction is left. Remember: the gridlines extend past the numbers on the axis. Numbers above 0 are NOT NEGATIVE.

• Position (in meters, m)
• Time (in seconds, s)
• Velocity (in meters per second, m/s)
• The slope

6. What is on the x (horizontal) axis on this Position vs time graph? Assume the positive direction is right and the negative direction is left. Remember: the gridlines extend past the numbers on the axis. Numbers above 0 are NOT NEGATIVE.

• Position (in meters, m)
• Time (in seconds, s)
• Velocity (in meters per second, m/s)
• The slope

7. What is the velocity of this object? Assume the positive direction is right and the negative direction is left. Remember: the gridlines extend past the numbers on the axis. Numbers above 0 are NOT NEGATIVE.

• 5 m/s right
• 1 m/s right
• 1 m/s left
• 5 m/s left

8. What is the velocity of this object? Assume the positive direction is right and the negative direction is left. Remember: the gridlines extend past the numbers on the axis. Numbers above 0 are NOT NEGATIVE.

• 5 m/s right
• 1 m/s right
• 1 m/s left
• 5 m/s left

9. What is the definition of acceleration?

• The position of an object.
• The change in the velocity of an object (speeding up or slowing down.)
• The rate of change of displacement
• The velocity of an object.

10. An object has a negative velocity and a negative acceleration. It is...

• Speeding up
• Slowing down
• Going at a constant velocity