Questions: Question 3(Multiple Choice Worth 3 points) (01.09 LC) An object is moving at a constant speed. Which of the following lines would represent this motion on a speedtime graph? A zero horizontal line A non-zero horizontal line An increasing diagonal line A decreasing diagonal line

Question 3(Multiple Choice Worth 3 points) (01.09 LC) An object is moving at a constant speed. Which of the following lines would represent this motion on a speedtime graph? A zero horizontal line A non-zero horizontal line An increasing diagonal line A decreasing diagonal line
Transcript text: Question 3(Multiple Choice Worth 3 points) (01.09 LC) An object is moving at a constant speed. Which of the following lines would represent this motion on a speedtime graph? A zero horizontal line A non-zero horizontal line An increasing diagonal line A decreasing diagonal line
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Solution

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Solution Steps

Step 1: Understand the Problem

The problem asks us to identify which line on a speed-time graph represents an object moving at a constant speed. A speed-time graph plots speed on the vertical axis and time on the horizontal axis.

Step 2: Analyze the Options
  1. A zero horizontal line: This would indicate that the speed is zero at all times, meaning the object is not moving.
  2. A non-zero horizontal line: This represents a constant speed that is not zero, as the speed remains the same over time.
  3. An increasing diagonal line: This indicates that the speed is increasing over time, which means the object is accelerating.
  4. A decreasing diagonal line: This indicates that the speed is decreasing over time, which means the object is decelerating.
Step 3: Determine the Correct Option

For an object moving at a constant speed, the speed does not change over time. Therefore, the correct representation on a speed-time graph is a horizontal line at a non-zero value.

Final Answer

The correct answer is \(\boxed{\text{A non-zero horizontal line}}\).

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