What scientific field of study scientists learn about time?

I'm pretty sure that would be astronomy.

Physics, is the right answer.

Explanation:

Physics is a field of science that examines the object, its movement and behavior through time and space. Moreover, it studies the associated objects of force and energy. The most important goal of physics as a scientific discipline is to understand how the universe functions. In the context of the time, for instance, if we have to find the speed of a person, it can be calculated by measuring the total distance covered and the total time taken by that person.

ch. 4), commonly known as the Smoot–Hawley Tariff or Hawley–Smoot Tariff, was an Act implementing protectionist trade policies sponsored by Senator Reed Smoot and Representative Willis C. Hawley and was signed into law on June 17, 1930. The act raised U.S. tariffs on over 20,000 imported goods.