As a newly hired engineer at "Toys R Them" your boss hands you over a smartphone and a super bouncy ball, manufactured from cutting edge material. Find a way to use your smartphone to estimate how many bounces this ball can make. Simulate the experiment and show results with any ball you can find

Explanation:

There are only two things that the ball needs to do for this experiment  It needs to bounce and it needs to make a noise when it hits the table (or whatever surface it hits). . Now start up your phyphox app and open up the experiment file "(In)elastic collision." Place your phone near the location that the ball will hit the surface so that the microphone can pick up the sound. Start recording and drop the ball.

The app then records all of the times the ball hits the ground. It's pretty cool. The app also uses the time between bounces to calculate the bounce height (I suppose the calculation assumes you are on the surface of the Earth with a vertical acceleration of 9.8 m/s2).

we can make a plot of bounce height vs. bounce number for a small metal ball bouncing on my lab table.

data is very simple to collect one can explore the relationship between initial drop distance and bounce height for a wide variety of balls.

Measuring the Speed of Sound

There is a method to determine the speed of sound using two smartphones. we need to run something that will act as an acoustic stop watch (phyphox has one). The acoustic stop watch is just like a normal timer. The only difference is that it starts and stops the timing based on a loud sound—like a clap.

answer:

an example of solubility is salt or sugar dissolving in water.

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