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Unformatted text preview: ' 78.3 ft ' (1) A projectile is fired from point A on the ground, and lands at point B on top of a building
of height h : 62.5 ft, as shown. The projectile’s initial velocity has magnitude ’UA : 88 ft / s,
and direction angle a = 59°. (a) Find the magnitude v3 and direction angle fl of the projectile’s velocity at B.
(b) Find the vertical distance d by which the projectile clears corner C of the building. (You may assume that all given dimensions are accurate to 3 significant figures.) solution (16) writeup (4) total (20) ’ 2. :K—eéicf VIZ/«5‘1” Safh) Sice reFremwfs mGt‘vj EeBQd' k OhfieWEIf-ZQ. 324318) N‘ a “QC: £57,323 see/3 g ‘ W? 2 7S. L+3< “ (532.2)(3407’733c1‘f06 292 «Fig/3 , W: mag W; M gm +45}
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$2 W 5323 Mt??? Wuv‘d +0 .. via A
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(‘5? 45.323 . ...
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- Spring '11
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