28) A crane lifts a 425 kg steel beam vertically upward a distance of 95 m. How much work does the crane do the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces. Show work. A) 4.7 x 105 J B) 2.7 x 105J C) 3.2 x 105 J D) 4.0 x 105 J 29) When a car of mass 1167 kg accelerates from 10.0 m/s to some final speed, 4.00 x 105 J of work are done. Find this final speed. Show work. A) 28.0 m/s B) 22.4 m/s

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter8: Potential Energy And Conservation Of Energy
Section: Chapter Questions
Problem 70AP: A particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N . Suppose a...
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Please answer 28-29
28) A crane lifts a 425 kg steel beam vertically upward a distance of 95 m. How much work does the crane do on
the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces. Show work.
A) 4.7 x 105 J
B) 2.7 x 105J
C) 3.2 x 105 J
D) 4.0 x 105 J
29) When a car of mass 1167 kg accelerates from 10.0 m/s to some final speed, 4.00 x 105 J of work are done.
Find this final speed. Show work.
A) 28.0 m/s
B) 22.4 m/s
C) 25.2 m/s
D) 30.8 m/s
yllabus (10).pdf
PHY116Summer2..pdf
W-
VLO6FrictionDa...docx
horizontal.pdf
MacBook Air
DII
DD
80
O00
D00
Transcribed Image Text:28) A crane lifts a 425 kg steel beam vertically upward a distance of 95 m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces. Show work. A) 4.7 x 105 J B) 2.7 x 105J C) 3.2 x 105 J D) 4.0 x 105 J 29) When a car of mass 1167 kg accelerates from 10.0 m/s to some final speed, 4.00 x 105 J of work are done. Find this final speed. Show work. A) 28.0 m/s B) 22.4 m/s C) 25.2 m/s D) 30.8 m/s yllabus (10).pdf PHY116Summer2..pdf W- VLO6FrictionDa...docx horizontal.pdf MacBook Air DII DD 80 O00 D00
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