an experiment to prove newtons first law of motion
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Many years ago, Sir Isaac Newton came up with some most excellent descriptions about motion. His First Law of Motion is as follows: “An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force.” Quite a mouthful. What that means is that something that is sitting there will continue to sit there unless moved. And something moving will keep moving unless something stops it.
Still a mouthful. Just think about this: When you are at a stoplight in your car and you start moving quickly, you feel pushed back into your chair. The opposite is true if you come to a sudden stop, and you move keep moving forward, with only your seatbelt preventing you from crashing forward.
Here are a couple of experiments that demonstrate this very cool law of motion; in a word called “inertia.”
Ball Bounce Experiment
Materials for the Ball Bounce Experiment:
A basketball or soccer ball, or similar bouncy balla smaller bouncy ball (like a tennis ball or a racquet ball).Have an assortment of other balls handy for further experimenting.
Procedure:
Do this experiment outsideFirst bounce the basketball and tennis ball side by side to compare their bounces. Start them off around chest heightMake a hypothesis (a guess) about what will happen when you stack the small ball on top of the bigger one and then drop itTry it! It may take a couple tries to line them up just right but the results are pretty awesome
Explanation:
The energy of motion from the bigger ball is transferred into the smaller one. Most of your attention is on the sky-rocketing smaller ball, but if you look at the basketball, it doesn’t have much bounce at all!
Still a mouthful. Just think about this: When you are at a stoplight in your car and you start moving quickly, you feel pushed back into your chair. The opposite is true if you come to a sudden stop, and you move keep moving forward, with only your seatbelt preventing you from crashing forward.
Here are a couple of experiments that demonstrate this very cool law of motion; in a word called “inertia.”
Ball Bounce Experiment
Materials for the Ball Bounce Experiment:
A basketball or soccer ball, or similar bouncy balla smaller bouncy ball (like a tennis ball or a racquet ball).Have an assortment of other balls handy for further experimenting.
Procedure:
Do this experiment outsideFirst bounce the basketball and tennis ball side by side to compare their bounces. Start them off around chest heightMake a hypothesis (a guess) about what will happen when you stack the small ball on top of the bigger one and then drop itTry it! It may take a couple tries to line them up just right but the results are pretty awesome
Explanation:
The energy of motion from the bigger ball is transferred into the smaller one. Most of your attention is on the sky-rocketing smaller ball, but if you look at the basketball, it doesn’t have much bounce at all!
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