To find Delta T (time), the equation delta t = t2 - t1 is commonly used, where t1 and t2 are known time values. If initial and final velocities, as well as displacement (delta X) and acceleration, are provided, the appropriate formula to calculate time can be derived from kinematic equations. The definition of acceleration is the rate of change of velocity over time. For a scenario with constant acceleration, the equation t = (v_f - v_i) / a can be utilized, where v_f is final velocity, v_i is initial velocity, and a is acceleration. Understanding these relationships is crucial for solving time-related physics problems.