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9-13-2008 1;09;35 PM

# 9-13-2008 1;09;35 PM - 7 A projectile with an initial...

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Unformatted text preview: 7. A projectile, with an initial velocity of 64 ft] sec, is launched vertically upwards from a ledge on a 192-ft tower. Its height at any time is given by: h(t)= —16t2 + 64: + 192 V'- ‘ 31 -L -t (all Find: a) the time required for the projectile to reach its maximum height, ‘ 12 ’E '1 I. ‘-l 2 o — ‘s‘zi— ‘ “(A ﬁt 2 Sec l b) the maximum height attained by the projeeﬁte: In 93- ~ — 11., (232+ may m :“Ul —t 119-11011 1,.- —. Minn =\1§(,—¥+l' c) the velocity of the projectile when t=l sec, and when W; J Wu. V =~32tlj~llle ; Kill/Yer. léeq V:- “Blfl‘v‘lqui 04+/51C §d) the time required for the projectile to hit the ground. _ ;_ m 1 2 i7. 0: —1B.L‘z+(,"lt-H‘11 '“E 1012 r 1 T2 *5 ,(Hﬁwt -. :1) 1” 9L: @9- K32: jio [0L1 F0: (9“ in“: my” be Mﬁaﬂl i" 622%} e) the v locity of the projectile when it hits the ground ﬂ" ‘ €- ( 1 2 3-1 W) ‘11 o r q - I‘ll 't (,1, l m 3:; we 1: ‘3' iii/Z? J ...
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