The cart shown in the diagram above starts at rest at position A. All the surfaces are frictionless, except for the lowest patch of ground, which has a µK of 0.34 and is 21 m long. Find the cart’s velocity at position C. (see attached image) 3.18m10.mThe cart shown in the diagram above starts at rest at position A. All the surfaces are frictionless, except for thelowest patch of ground, which has a µk of 0.34 and is 21 m long. Find the cart's velocity at position C.

Given:- The initial height of the object is point A is H = 18 m The final height of the object is…

Answered: 3. 18m €1 10.m The cart shown in the…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 79AP: A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the...

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The cart shown in the diagram above starts at rest at position A. All the surfaces are frictionless, except for the lowest patch of ground, which has a µ_K of 0.34 and is 21 m long. Find the cart’s velocity at position C. (see attached image)

3.
18m
10.m
The cart shown in the diagram above starts at rest at position A. All the surfaces are frictionless, except for the
lowest patch of ground, which has a µk of 0.34 and is 21 m long. Find the cart's velocity at position C.

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I understand we need to start with:

GPE_A + KE_A = W_f + GPE_C + KE_C

mgh_A + 0 = umgL + mgh_C + 1/2mv_c²

from here we can cancel out mass and isolate v_c² to solve. But shouldn't we include the h_a in our final solution? Also, may I ask why you canceled gravity out of ugL and gh_cv? Thank you!

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