# Exam 1 Winter 200 - hqg Yb p,rd'ft\w W o2 t You d ecide o w alk a crossheD iag t from A t o B a longt he s olidp aths hown A at r ight.Y our f

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?hqg \Yb p,rd'ft\w. \ Wo2 f !. D-' Yodff r '", \, ufji' odr-*-s).p-- Ff' r3 You decide to walk across the Diag from A to B along the solid path shown t at right. Your friend leaves A at the Jt. samJ time you do; but follows the dotted \l ,Fts'' path. If you walk at 1.8 m/s, how fast , # - i' Yod I I should your friend walk to arrive at B at , Un lSl I the sanre tlme you do? " .- I -hi '!; =\ o'Wff i d' mg Same Ume yOU OOt ' t' I 4; 'i . -,-: ,tyf I' u :il\-\cp, u roA rD Mff aJ ,; (,,r*l ) offi-**f*j d1 ,,a, _ep.e ,."6-.ffii Jdtt(#,tr1*A \,? t\$].,*. .'^rbfri."'1't (rt \'. .;-'*rr"' n|rlLts * s' J *_ r u. f-- h d s" Ft <---a\ t c{t/ ^,^ u \ ;: d5.i \ ,, -t"A-r 2. An airplane releases a box of supplies while flying horizontally at constant velocity. The box is released from rest relative to the plane. Neglecting air resistalce, where does the box Vn= cl=an1j A) Behind the plane. B) In front of the plane. F(lt depends on the height from which the package was dropped. p{t on the speed of the plane. p) pirectly below w GO ON TO TIIE NEXT PAGE

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'l 3. Consider the following statements about the projectile whose trajectory is shown at c right. Air resistance is negligible. r m I. The speed at B is the same as the speed at D. l-'/ 40 X1 fne acceleration is zero at C. III. The acceleration is negative at A and s positive at E. ,/. . zo IV. The time to go from A to C is the same as the time to go from C to E. U./-' 10 Which statements are true? o f* x (m) @ fiiyU, and IV B) I and C) II and III D) II and E) I, 11, 11I, IV lt Gl+. you are a passenger on a ferry boat that is crossing a lake at speed \aoaF4.4 m/s. You decide V to walk directly across the deck at speed vyou=l.9 m/s, as shown below: -/\ f al (i,w 'lr \ r,k{/f Ev I \ 17 -YlW | | v-.^. f boat mw 'vou > > w r ) --Tr-T'-r Yz i \l^n ,/ t'"ln!J 0 What is your speed relative to a person standing on the shore? r/ r) "-*lVfiSpa\ \r,ct Vpsx f YtW eDh"' \r . , \ ' t \pg t Veot 5t vPsrr 3.qb \ t^\ t{ Lt I ouou l v \eS A) 5.0 m/s GO ON TO TIM NEXT PAGE E) 5.9 m/s
,l c ,d' \* l-. Vtl\ t9,a lmum @o 4* *,8(E t (t1*da skt P*(b7 ;'l t qfi'l) \ ,4u\ r J., ,L A ' d{r\ * A) 4.5 m/s B) 3.4 m/s \ .\ \ l C) 4.3 m/s

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## This note was uploaded on 07/11/2011 for the course PHYSICS 125 taught by Professor Unknown during the Spring '08 term at University of Michigan.

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Exam 1 Winter 200 - hqg Yb p,rd'ft\w W o2 t You d ecide o w alk a crossheD iag t from A t o B a longt he s olidp aths hown A at r ight.Y our f

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