While the cart is moving along an aisle, it comes in contact with a smear of margarine that had recently
been dropped on the floor. suddenly the friction force is reduced from -40.0 newtons to-20.0 newtons.
what is the net force on the cart if the "pushing force" remains at 40.0 newtons? does the grocery cart
move at constant velocity over the spilled margarine?
Answers: 2
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