A fly wants to fly from the parcel shelf to the dashboard in my moving car (60 km/h). At what speed does the fly do that? 5km/h or 65km/h?

Asker: Josh, 34 years old

Answer

To the observer sitting in the car, the fly flies at a speed of 5 km/h. To an observer who sees the car passing by at 60 km/h, the fly has a speed of 65 km/h.

Answered by

Prof.dr.ir. Bart Soree

Nanoscience and nanotechnology : theoretical physics of devices

A fly wants to fly from the parcel shelf to the dashboard in my moving car (60 km/h).  At what speed does the fly do that?  5km/h or 65km/h?

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