**Unformatted text preview: **(b) is tangent to the x curve at t = 3 . 0 s. Its slope is the instantaneous velocity at t = 3 . 0 s. ............................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . .... .. .. .... . ... .... . ... .... .... ... . .... .. .. .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . 2 . 3 . 4 . 100 200 300 400 (a) (b) t x ..................................................................................................................... 1 . 2 . 3 . 4 . 50 100 150 200 t v...

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