# A skydiver is falling straight down, along the negative y direction. (a) During the initial part of

## Question:

(a) During the initial part of the fall, her speed increases from 16 to 28 m/s in 1.5 s, as in part a of the figure.

(b) Later, her parachute opens, and her speed decreases from 48 to 26 m/s in 11 s, as in part b of the drawing. Concepts:

(i) Is her average acceleration positive or negative when her speed is increasing in part a of the figure?

(ii) Is her average acceleration positive or negative when her speed is decreasing in part b of the figure? Calculations: In both instances (parts a and b of the figure) determine the magnitude and direction of her average acceleration.

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