To accurately evaluate the conclusions based on the graph of the bicycle rider's motion, we need to interpret the information typically shown in such graphs, specifically the position versus time graph.
- Conclusion A: If the graph is a straight line between 0 and 10 seconds, it indicates constant speed.
- Conclusion B: If the line is horizontal (level) between 10 and 15 seconds, it means the rider did not move during this time.
- Conclusion C: If the slope of the line between 15 and 20 seconds is negative, it suggests the rider was moving downhill.
- Conclusion D: If the slope of the line is decreasing (or becoming less steep) between 15 and 20 seconds, it shows that the rider slowed down.
Without seeing the specific graph, it's impossible to determine which conclusion is correct, but you can analyze the shape of the graph corresponding to these statements:
- If the graph has a straight, diagonal line in a segment, it supports constant speed.
- A horizontal segment shows no movement.
- A downward slope indicates downhill motion.
- A flattening slope suggests slowing down.
Choose the conclusion that directly aligns with what is visually represented by the graph.