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2)A 2200-kg car accelerates from 10m/s to 30m/s. What is the net work done by all forces that act on the car?

2)A 2200-kg car accelerates from 10m/s to 30m/s. What is the net work done by all forces that act on the car?

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 100CP: The surface of the preceding problem is modified so that the coefficient of kinetic friction is...
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Solve for #2 Solve for #3 Solve for #4
1)A 50.0 kg mass is pulled along 25.0m on a floor with uk=.10, as shown. Find the work done by each force present. =mg- N=60kg(9.8m/s2)) – 8ONsm(30) = 450N Frietionet w= f.d = (10)(450N)(25m ) w> 1125J N = -Fçino F-80.ON | 30.0 External Force W=t.d.cose (90N)(25m).cos(3c 1732.051J Force %3D MG W = Frictiona Perce 2)A 2200-kg car accelerates from 10m/s to 30m/s. What is the net work done by all forces that act on the car? 3)A 1800-kg car accelerates over a distance of 120m due to a net force of 4200N. If its initial speed was 40km/h, what is its final speed. 4)A 25 kg block.moving at Vo=28m/s slides on a surface with friction. If the coefficient of kinetic friction is uy=.08 over what distance dose it come to rest.
Transcribed Image Text:1)A 50.0 kg mass is pulled along 25.0m on a floor with uk=.10, as shown. Find the work done by each force present. =mg- N=60kg(9.8m/s2)) – 8ONsm(30) = 450N Frietionet w= f.d = (10)(450N)(25m ) w> 1125J N = -Fçino F-80.ON | 30.0 External Force W=t.d.cose (90N)(25m).cos(3c 1732.051J Force %3D MG W = Frictiona Perce 2)A 2200-kg car accelerates from 10m/s to 30m/s. What is the net work done by all forces that act on the car? 3)A 1800-kg car accelerates over a distance of 120m due to a net force of 4200N. If its initial speed was 40km/h, what is its final speed. 4)A 25 kg block.moving at Vo=28m/s slides on a surface with friction. If the coefficient of kinetic friction is uy=.08 over what distance dose it come to rest.
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