Eighth Grade Science S8P3.b

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6 questions
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S8P3.b
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Jillian wants to see how hard she has to kick a soccer ball to score a goal from midfield. Which of the following experiments would help her determine this?

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Lucia pushed her little sister four feet upward on a swing by exerting a force of 50 Newtons. Lucia wants to determine if her sister will always move four feet upward on a swing when she pushes her with 50 Newtons. Which experiment will work best to determine if Lucia's sister will always travel four feet upward on a swing when pushed with 50 Newtons?

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Makayla is conducting an experiment. She places a large block on the ramp and prepares to time the block as it moves down the ramp. When the block is released, it does not move. Makayla places a piece of wax paper between the block and the ramp. This time the block slides easily down the ramp. Which of the following best explains the job of the wax paper?

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