Question #46f0c
1 Answer
May 22, 2016
Explanation:
a quick search in the internet suggests that Federer's average first serve at Wimbledon was about 115 mph in 2016 which is about 51 m/s.
The mass of a tennis ball is about 58g (0.058kg).
So the kinetic energy would be
An electron volt =
So in MeV, the energy would be
The de Boglie wavelength,
So