The graph shows the motion of a falling ball during the interval from t0 to t5.

Question

The graph shows the motion of a falling ball during the interval from t0 to t5. During which interval is the average speed the greatest? During which interval is the average speed the least? Why is the plot a curve instead of a straight line?

a) The average speed is greatest betweent4andt5. The average speed is least betweent0andt1. The plot is a curve because there is uniform motion.
b) The average speed is greatest betweent4andt5. The average speed is least betweent0andt1. The plot is a curve because the ball does not fall with uniform motion.
c) The average speed is greatest betweent3andt4. The average speed is least betweent2andt3. The plot is a curve because the ball does not fall with uniform motion.
d) The average speed is greatest betweent0andt1. The average speed is least betweent4andt5. The plot is a curve because the ball does not fall with uniform motion.

Explanation / Answer

b)

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