Question

1. what is acceleration? the distance an object travels in a certain amount of time. the change in an objects distance over time. the change in an objects velocity over time. how fast or slow an object moves. 13. which segment on the graph represents slowing down? speed vs. time

Explanation:

Acceleration is defined as the change in an object's velocity over time. Velocity is a vector quantity (has both magnitude and direction), and acceleration measures how quickly this velocity changes.

• The first option ("The distance an object travels in a certain amount of time") describes speed (if scalar) or velocity (if vector), not acceleration.
• The second option ("The change in an object’s distance over time") is also related to speed/velocity concepts (average speed is total distance/total time; instantaneous speed is the derivative of distance with respect to time).
• The fourth option ("How fast or slow an object moves") is simply the definition of speed.

Answer:

The change in an object’s velocity over time.