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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?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

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.

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