6 A cart of mass 400 kg starts from rest at the top of a frictionless track as shown At the end of the run there is a rough part of the track 10 0 m long that slows the cart down by friction (coefficient of kinetic friction 0 50) Everywhere else the track is frictionless Just in case the cart is n...

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6. A cart of mass 400 kg starts from rest at the top of a frictionless...

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6. A cart of mass 400 kg starts from rest at the top of a frictionless...

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