![]() Of course, handicapping-wise, this doesn't mean a whole lot. As of Wednesday, seven teams are favored by 6.0 points or more, while two other games sit at 5.5-point spreads. While teams like Philadelphia, Kansas City and Buffalo have established themselves as early contenders, it feels as though the list of teams bettors can feel confident in each week is as short as it's ever been.Ĭoming off of a Week 4 that featured only two teams favored by at least a touchdown, the Week 5 schedule is a bit more lopsided. Forget the spreads – picking so many of these games straight up each week feels like a true 50/50 proposition. With that said, the league continues to be steeped in near-unprecedented levels of parity. After slogging our way to an 8-7-1 ATS record in Week 3, we mustered a 7-7-2 mark in Week 4. Welcome to this week's edition of Beating the Book – or perhaps more accurately: Surviving the Book. Forįurther information, consult your state's handbook of Science Safety.This article is part of our Beating the Book series. Materials used in a project is the sole responsibility of each individual. Reading and following the safety precautions of all Should be undertaken only in appropriate settings and with appropriate parental Implementation of any Science Project Idea Warning is hereby given that not all Project Ideas are appropriate for all In addition, yourĪccess to 's website and Science Fair Project Ideas is covered byĮ's Privacy Policy and site Terms of Use, which include limitations Renounce any claims against that arise thereof. By accessing the Science Fair Project Ideas, you waive and Regarding the Science Fair Project Ideas and is not responsible or liable forĪny loss or damage, directly or indirectly, caused by your use of such does not make any guarantee or representation Weight and elasticity do not matter.Į provides the Science Fair Project Ideas for informational Result: All balls should take the same amount of time to reach the ground when dropped from the same height. Which ball hits first? Does weight matter? Does elasticity matter? To explore gravity and gravitational forces, get a stopwatch and time each ball from the time it is dropped until it hits the ground. A lot of it goes back into the ball, giving it more force to pop back up into the air-so the higher the potential energy, the higher the kinetic energy, and the higher the kinetic energy, the higher the bounce! Further investigation: ![]() When the ball hits the ground, all that kinetic energy has to go somewhere. Which object do you think has a higher kinetic energy: a car or an airplane?īecause gravity has the most time to do its job when the balls are dropped from 75 centimeters, these balls have the most kinetic energy by the time they hit the ground. The faster an object moves, the higher its kinetic energy. So what happens to potential energy when a ball is dropped? It turns into kinetic energy, or the energy an object has when it is moving. If an object is going to be dropped from high up in the air, it has lots of potential energy because the earth’s gravity has plenty of time to accelerate, or speed up, the ball when you let go of it-and the longer an object falls, the faster it gets. An object has potential energy because of its position. This is because the higher the starting height of the ball, the higher the ball’s potential energy. The balls dropped from 75 centimeters will bounce higher than those dropped from 50 centimeters, and the balls in the 50 centimeter trials will bounce higher than those in the 25 centimeter trials. It doesn’t get squished when it lands, so it has a harder time changing its direction from down to up. The marble, which is the hardest out of the three balls, has the least elasticity, so it does not bounce as high. When it does this, it pushes back on the ground shoots back up into the air. ![]() When the rubber ball hits the ground it gets compressed, or squished, and because it is very elastic, it quickly returns to its original shape. When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. On average, the rubber bouncy ball will bounce the highest, followed by the ping pong ball. Repeat steps 11 and 12 for the ping pong ball.How do you think the height at which the ball was dropped affects how high it bounces? Why? You should see a pattern emerging! Average the recorded bounce heights from each 75 cm trial together to find the average bounce height for the rubber ball.Have a partner drop the rubber ball 5 times from the 75 centimeter mark and record the height in a table.Repeat steps 7 and 8 for the ping pong ball.Average the recorded bounce heights from each 50 cm trial together to find the average bounce height for the rubber ball.Have a partner drop the rubber ball 5 times from the 50 centimeter mark and record the height in a table.Repeat steps 3 and 4 for the ping pong ball.
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