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MyUB Your personal portal X M Information Regarding Your W x WileypLUS Secure https://edugen.wileyplus.com/edugen/student/mainfr.uni rLUS Halliday, Fundamentals of Physics, 10e university Physics (PHYs 02TPHYsios/ PHYs 207) Study & Practice Assignment Open Assignment PRINTER VERSION MESSAGE MY INSTRUCTOR RESOURCES Chapter 04, Problem 023 A projectile is fired horizontally from a m above flat ground, emerging from the gun with a speed of 260 m/s. (a) How long does the projectle gun that is 56.0 component of its in the air? (b) At what horizontal distance from the firing point does it strike the ground? (c) What is the magnitude ofthe ve velocity as strikes the ground? (a) Number Units (b) Number (c) Number click if you would like to show work for this question open show work LINK TO SAMPLE PROBLE LINK TO TEXT LINK TO SAMPLE PROBLE VIDEo MINI-LECTURE MATH HELP MATH HELP MATH HELP MATH HELP Question Attempts: o of 4 SAVE FOR LATER suBKITANSwER used atesment l Privact Polisy I p 2000-2012 wiley A sens, uns, Al Rights Reserved A Division of labn wiley Asons, unc. en waeyplus comveduger/shared assignmentnest/agist uriaNt

Explanation / Answer

h = 56 m ; Vix = 260 m

a)let t be the time. from eqn of motion

S = ut + 1/2at^2

for u = 0 ; S = h ; a = g

h = 1/2 gt^2

t = sqrt (2h/g) = sqrt (2 x 56/9.8) = 3.381 s

Hence, t = 3.381 s

b)D = Vix x t

D = 260 x 3.381 = 879.06 m

Hence, D = 879.06 m

c)from eqn of motion

v = u + at

v = Vy ; v = Viy = 0 ; a = -g

Vy = 0 - 9.8 x 3.381 = -33.134 m/s

Hence, Vy = -33.134 m/s

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