Bob and Sue each develop their own hypothesis to explain why balls bounce. An experiment dropping two identical basketballs shows both hypotheses work equally well. Which of the choices below are scientifically valid steps to help determine which hypothesis is correct? Choose all that apply. A Find out which person is more educated and declare their hypothesis to be correct BTest one hypothesis and then the other because you can't test two hypotheses at the same time Try an experiment using two baseballs D Declare Bob's hypothesis to be correct because men are always correct E Ask a group of at least 5 physicists which hypothesis they agree with and declare the most agreed upon hypothesis to be correct

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Newton’s Third Law of Motion

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?”