Which of the following is NOT true regarding the motion of the cart down the inclined if friction is neglected? Select one: O The higher the inclination, the greater the acceleration of the cart. O The higher the inclination, the time of travel of the cart shortens. O The acceleration of the cart is constant across different inclination angle. The additional mass on the cart does not affect its acceleration down the incline.

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The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”