F. You get inside and you have to push the cart across a thick carpet. Describe which forces would change if you want to continue to push the cart at a constant
velocity across the carpet.

Forces Due to Friction and Newton's Third Law

The forces on the cart include the forward force the horse exerts on the cart and the backward force due to friction at the ground, acting on the wheels. At rest, or at constant velocity, these two are equal in size, because the acceleration of the cart is zero.

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Explanation: