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A football player catches a ball at his ...

A football player catches a ball at his goal line `(x =0)` at `t = 0`, and his motion is then graphed on the displacement `vs`. Time graph below.

(A) During which interval is the player accelerating away from his goal line?
(B) What is his velocity between points `B` and `C`?
(C ) describes his motion between points `C` and `D`.
(D) What is his velocity (magnitude and direction) during interval form `4s` to `6s`?

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