Think about Pete's journey from lesson 2. How would you compare his motion in the first 10 min and the last 10 min of his trip?

Peter's journey
42 14 12-
10-
8-
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4-
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0+
0
Distance from hame (km)
10
20 30 40
Time (minutes)
1 point
Captionless Image
He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
His acceleration increases during the first 10 minutes and decreases during the last 10 minutes.
He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.

2 answers

To analyze Pete's journey based on the information provided and the options given, we can consider the following:

  1. Direction: If Pete's distance from home is increasing, he is moving away from home. If it's decreasing, he is moving towards home.

  2. Speed: The speed can be inferred from the steepness of the graph. A steep slope indicates a faster speed, while a gentler slope indicates a slower speed.

  3. Acceleration: This refers to how the speed changes over time. If Pete is speeding up, the slope of the graph is increasing (becoming steeper). If he is slowing down, the slope is decreasing (becoming less steep).

Given these points, the best choice would depend on the specific details of Pete's motion during the first and last 10 minutes of his trip as indicated by his distance graph.

  • If you observe that he is indeed moving faster (more distance covered over the same time) and possibly in a different direction in the first 10 minutes compared to the last 10 minutes, then the first choice might be suitable.

  • If he starts off with acceleration (speeding up) and then slows down towards the end, that would align with the last option.

Without the actual graph, it's challenging to say definitively which is correct, but based on typical interpretations of motion:

If he starts out fast and appears to slow down towards the end, then the most fitting answer would be:
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.

However, you would need to verify this with the actual graph data for certainty.

What does the horizontal line mean in Pete's Journey?
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1 point
Captionless Image
Pete is accelerating.
Pete remains still.
Pete has a position of zero.
Pete has a constant, nonzero velocity.
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