Extension: Examine the velocity-time graph for a journey that took 11 seconds. Do you support or refute the following claim? Use evidence from the article to support your answer.
Claim: Acceleration occurred only during the first 3 seconds of the journey.
To determine whether acceleration occurred only during the first 3 seconds of the journey, we need to analyze the velocity-time graph for the entire 11-second journey.
If the velocity-time graph shows a constant slope, indicating a constant velocity, then acceleration did not occur after the initial 3 seconds. However, if there are changes in the slope of the graph beyond the first 3 seconds, then acceleration continued to occur throughout the journey.
According to the article, acceleration is defined as a change in velocity over time. If there are no changes in velocity after the first 3 seconds, then acceleration would not occur beyond that point. However, if the velocity-time graph shows varying slopes, it would indicate that acceleration continued throughout the journey.
Therefore, by examining the velocity-time graph for the entire 11-second journey, we can determine whether acceleration occurred only during the first 3 seconds. It is essential to analyze the graph for any changes in velocity beyond the initial period to support or refute the claim.