Question

Acceleration
10
8
C
Speed (m/s)
A.
D
E
0
5
10
Time (s)
15
20
Which segments show no acceleration?
A
Segment OA and segment EF
Segment BC and segment FG
1x
C Segment AB and segment EF
D
Segment CD and segment DE

Answer 1

To determine which segments show no acceleration, we need to identify segments where the speed is constant. In a speed vs time graph, segments that are horizontal (meaning the speed does not change over time) indicate no acceleration.

Let's analyze the options provided:

- **Segment OA and segment EF**: If these segments are horizontal, then speed is constant in those segments, indicating no acceleration.
- **Segment BC and segment FG**: If these segments are not horizontal, they show changes in speed, which means there is acceleration.
- **Segment AB and segment EF**: If AB shows change in speed and EF is horizontal, then only EF shows no acceleration.
- **Segment CD and segment DE**: If both segments show changes in speed, then they both indicate acceleration.

Based on this information, the segments that show no acceleration will be those that are horizontal.

Based on your options, the best choice would depend on the specific characteristics of these segments. If segments OA and EF are indeed horizontal, then option A ("Segment OA and segment EF") would be correct.

If you can confirm the nature of each segment based on the graph, you can identify which ones are horizontal for the final answer. If I misinterpreted the labels (e.g., if CD or DE are also horizontal), please clarify so I can assist you further!