ys2425 Spring 2017 c O www.webassign netwebstudent/Assignment-Responses/submit?d

Question

ys2425 Spring 2017 c O www.webassign netwebstudent/Assignment-Responses/submit?dep 15737571 C Dodge Cummins Die Bob Wagner 6Rod and Reel Bass 6 Rod and Reel Bass F D 21 6 Techno Source for thi This 19a2 Ford coup. D The Dewa uoves ARat D a Show My Work optional B My Notes C Ask Your Teac O -6 points HRW 10 4. P.028. In the figure below, a stone is projected at a cliff of height h with an initial speed of 48.0 m/s directed 60.0 above the horizontal. The stone strikes at A, 5.60 s after launching. (a) Find the height, h, of the cliff. (b) Find the speed of the stone just before impact at A. (c) Find the maximum height H reached above the ground. 1126 P a

Explanation / Answer

a) h = (v * sin theta) t - 1/2 g t2

h = (48 * sin 60) 5.6 - (0.5 * 9.8 * 5.62)

h = 79.12 m

b) v = sqrt [(v cos theta)2 + (v sintheta - g t)2]

= sqrt [(48 cos 60)2 + (48 sin 60 - 9.8 * 5.6)2]

= 27.44 m/s

c) t = v sin theta / g

H =  v2 sin2 theta / 2 g

= (482 * sin2 60) / (2 * 9.8)

H = 88.16 m

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