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Find the average acceleration

The positions of two blocks at successive 0.20 second time intervals are represented by numbered squares in the diagram below. The blocks are moving toward the right.

20. Do the blocks ever have the same speed? Explain the reasoning behind your answer.

A. No
B. Yes at instant 2
C. Yes at instant 5
D. Yes at instant 2 and 5
E. Yes at some time during the interval 3 to 4

21. The accelerations of the blocks are related as follows:

a.) the acceleration of "a" is greater than the acceleration of "b"
b.) the acceleration of "b" is greater than the acceleration of "a'
c.) The acceleration of "a" equals the acceleration of "b." Both are greater than zero.
d.) The acceleration of "a" equals the acceleration of "b". Both are zero.
e.) Not enough information is given to answer the question.

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Solution Summary

In an attached Word document, explanations are given regarding the speed of the blocks and acceleration of the blocks, including clear calculations.

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