Question: In Exercises a distance-time graph is shown. (a) Estimate the slopes of the secants PQ 1, PQ 2 , PQ 3 , and PQ 4

In Exercises a distance-time graph is shown.

(a) Estimate the slopes of the secants PQ_1, PQ₂, PQ₃, and PQ₄, arranging them in order in a table. What is the appropriate unit for these slopes?
(b) Estimate the speed at point P.

The accompanying figure shows a distance-time graph for a wrench that fell from the top platform of a communication mast on the moon to the station roof 80 m below.

Distance fallen (m) 80 60 40 20 0 2 ON lad 23

Distance fallen (m) 80 60 40 20 0 2 ON lad 23 5 Elapsed time (sec) P 10 1

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