A mobile phone involves physics for electrical circuits and signal transmission. Chemistry provides the polymer casing and lithium-ion battery components. These branches connect, as chemistry powers the device that physics enables for communication.
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Keep the route distance and your average speed to model travel time. Ignore wind resistance or road surface details. Ignoring these simplifies the calculation, making it easier to determine a useful, approximate arrival time.
For a cricket ball model, include mass, launch speed and direction. Ignore the ball’s color, stitching patterns, bat brand and field grass, as these do not affect the basic trajectory or landing distance.
Meghna should ask about today’s humidity levels, current temperature trends and wind speed. She could also inquire about sky conditions during previous rainy days to compare data with current patterns for scientific testing.
We take about 20,000 breaths daily. Each breath is roughly 0.5 litres. Multiplying these gives an estimate of 10,000 litres of air breathed in one day, which is a reasonable, approximate and useful figure.