A ball is thrown horizontally at a stationary cart. Four different results are listed below. For which result would the momentum change of the cart be greatest? ' ' The ball hits and sticks to the cart; the cart rolls right with the ball attached. ' The ball hits the cart and drops straight to the ground; the cart rolls right. ' ' The ball hits the cart and bounces back to the left at high speed; the cart rolls right. ' The ball hits the cart and bounces back to the left at low speed; the cart rolls ght