Problem 2.18 PartB At which of the labeled points is her velocity constant and p

Question

Problem 2.18 PartB At which of the labeled points is her velocity constant and positive? A physics prolessor leaves her house and walks along the sidewak toward campus After 5 min, she realizes that it is aining and returms home. The distance from her house as a undion ol tme is shown in the Sgure below (Figure 1) Request Answer Part C At which of the labeled points is her velocity constant and negative? 1 of1 x (m) Request Anse 100) ol 1 2 34563 8 Part D mini At which of the labeled points is h MacBook Air 3 4 6

Explanation / Answer

velocity = slope of x vs t curve

(B) slope have to be positive.

positive slope = I, II , III

at II and III , velocity is changing.(slope changes)

Ans: I

(C) negative slope = V  

slope constant also.

ANs: V

(D) Slope increase than velocity also increases.  

Ans: II

(E) velocity decreases.

Ans: III

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