Question

Can someone please help me understand what I'm doing wrong on this one?

Step 1

Acceleration is the rate of change of velocity. It is equal to the slope of the graph about the point *t* = 2.5 s.

Step 2

From the graph, the slope about the point *t* = 2.5 s is,

Step 3

Negative sign indicate...

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Sorry about that. What wasn’t helpful?