M08 YOUN7066 13 ISM c08 tủ tài liệu training

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M08 YOUN7066 13 ISM c08 tủ tài liệu training

8Momentum, Impulse, and Collisions8.1.Identify and SET Up: p = tin-. K = yinv2.Execute: (a) P = (10.000kg)(12.0m's) = 1.20xl05 kg Ill's(b)(i) V=£ =1 ,

M08 YOUN7066 13 ISM c08 tủ tài liệu training,2°* * n'm s = 60.0 m/i. (ii) I»r4®ỉ»»sưv*ồjv. sont 2000 kgrsvv = Íj£Vĩ = /l™^(12.0 nvs) = 26.8 nvs V'suv V 2000k?Evaluate: The SUV must have less spe

ed to have the same kinetic energy as the truck than to bas e the same momentum as the truck.8.2.Identify: Each momentum component IS the mass tunes t M08 YOUN7066 13 ISM c08 tủ tài liệu training

he corresponding velocity component.Set Up: Let +v be along the horizontal motion of the shotput. Let +1 be vertically upward.vx = vcosớ. ly = VSÚ1Ớ.E

M08 YOUN7066 13 ISM c08 tủ tài liệu training

xecute: The horizontal component of the initial momentum ISPx =I,IVX = "n COS0 = (7.30 kgX15.0 m/$)cos 40.0°=83.9 kgm's.The vertical component of the

8Momentum, Impulse, and Collisions8.1.Identify and SET Up: p = tin-. K = yinv2.Execute: (a) P = (10.000kg)(12.0m's) = 1.20xl05 kg Ill's(b)(i) V=£ =1 ,

M08 YOUN7066 13 ISM c08 tủ tài liệu trainingl.8.3.Identify and SET Up: p = mv. K = 4"tv2.Execute: (a) v = — and A' = |ml —j =Ill\ III! 2m(b)A, = A'b and the result from part (a) givesPk =. I—pc

= .pPc = 1.90p,. The2me 2mt,y 0.040 kgbaseball has the greater magnitude of momentum. p./pb = 0.526.(c)p'-=2ntK so pm = pw gives 2woA'm = 2w„.A'w. w = M08 YOUN7066 13 ISM c08 tủ tài liệu training

mg. soThe woman has greatet kinetic energy. A'mZAw = 0.641.Evaluate: For equal kinetic energy, the more massive object has the greater niomenttun. Fo

M08 YOUN7066 13 ISM c08 tủ tài liệu training

r equal momenta, the less massive object has the greatet kinetic energy.8.4.Identify: Fot each object p = mv and rhe net momentum of the system is p =

8Momentum, Impulse, and Collisions8.1.Identify and SET Up: p = tin-. K = yinv2.Execute: (a) P = (10.000kg)(12.0m's) = 1.20xl05 kg Ill's(b)(i) V=£ =1 ,

n of this matenil may be reproduced, in any form or by any means, without pcrmissico in wntang trom the publisher.8 18-2 ChaptersSet Up: Let object A M08 YOUN7066 13 ISM c08 tủ tài liệu training

be the pickup and object B be the sedan. vto = -14.0 m's. = 0. Vgfc = 0. VẠ =+210 Ill's.Execute: (a) px = pAx +/>* = »/jv4v +»V>1 =<2500 kg)(-14.0m’s)

M08 YOUN7066 13 ISM c08 tủ tài liệu training

+ 0 = -3.50xi04 kgm'sPy =Pa> + Pb> = t,lAvAị+>t>BrB} = (1500 kgX +23.0 nvs) = +3.45xio4 kịt Ill's(b) p = ^p-+p-= 4.91xl04 kg-nv's. From Figure 8.4. t

8Momentum, Impulse, and Collisions8.1.Identify and SET Up: p = tin-. K = yinv2.Execute: (a) P = (10.000kg)(12.0m's) = 1.20xl05 kg Ill's(b)(i) V=£ =1 ,