High School Physics homework. Just zoom in to see it. The graph below represents

Question

High School Physics homework. Just zoom in to see it.

The graph below represents the motion of Binky, your teacher's rabbit. At what point(s) on the graph above is Binky moving the slowest? (How do you know?) Over what intervals on the graph above is Binky speeding up? (How do you know?) Over what intervals on the graph above is Binky slowing down? (How do you know?) At what point(s) on the graph above is Binky changing direction? (How do you know?) Over what intervals does Binky appear to be traveling at a constant speed? (How do you know?)

Explanation / Answer

Part A:

at points B & F, binky is moving slowest, the tangent at those points are parallel to the time-axis.

Part B:

between points B-C and F-G, binky is speeding up, because of increasing slope.

Part C:

between points A-B and E-F, binky is slowing down, because of decreasing slope.

Part D:

at points B and F, binky is changing direction, because the slope changes from positive to negative.

Part E:

between the intervals CD & DE, binky is at constant speed, because it has got constant slope.

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