Phy 201
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The problem:
A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
• What is your best guess about the ball's average velocity?
answer/question/discussion: My best guess about the ball’s average velocity is that the average velocity of the ball is 7cm/sec. This is because it is the average of the two numbers.
• Without further information, why is this just a guess?
answer/question/discussion: Being that I do not know the path it took it is impossible to accurately answer this question.
• If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
answer/question/discussion: Approximately 12 cm
• At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: The average rate of change for the velocity at this time interval would be 1 cm/ 3 sec
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10 min
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Your first answer is correct, and includes an explanation of your thinking.
Your other two answers do not appear to be correct, and neither includes an explanation of your thinking.
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