Final answer:
Equations (c) d = 1,950t and (d) d = 2,000t describe speeds significantly faster than the assumed speed of a Winchester bullet (1,200 m/s), thereby fitting Superman’s description of being 'faster than a speeding bullet'.
Step-by-step explanation:
To determine which equation describes a speed faster than a speeding bullet, we must know the speed of a Winchester bullet. Let's assume the speed of a Winchester bullet is approximately 1,200 meters per second (m/s). The equations provided give us distance (d) as a function of time (t), with the coefficients representing speed in meters per second.
- d = 1,294t implies a speed of 1,294 m/s.
- d = 1,492t implies a speed of 1,492 m/s.
- d = 1,950t implies a speed of 1,950 m/s.
- d = 2,000t implies a speed of 2,000 m/s.
All of the speeds in these equations are faster than 1,200 m/s. However, to be more specific, based on our assumption, equations c) d = 1,950t and d) d = 2,000t represent speeds significantly faster than that of a Winchester bullet. Therefore, these would best fit the description of Superman being 'faster than a speeding bullet.'