How is physics involved in track and field?

In many ways. For example, when you're running a relay, you have to divide the length of the race by the number of different participants from each team to make each runner's length equal.

The majority of running tracks measure 400 meters (437.2 yards) in length. They are usually laid out with each straight section 100 meters, and each turn 100 meters respectively. Some tracks are laid...

.. its the track. its the events that require running, the field, is all throwing and jumping events such as javelin and long jump The track events are anywhere from speed to distance ex: 200m - 5k

Nuclear Physics is a field of physics, yes. It involves interactions between atomic nuclei. Nuclear fission, nuclear fusion, nuclear decay (though in some ways that is more particle physics).

'Track and field', called athletics in some of the world, is a collection of sports grouped together as they share similar aspects and a common history many of them are, or were developed from, the...