Final answer:
The time when s = 213.2 meters is approximately 10 seconds.
Step-by-step explanation:
The physical motion of an object is modeled by the function s = 21.3t where t is the time (measured in seconds) and s is the position of the object (measured in meters). To find the time when s = 213.2 meters, we can substitute the value of s into the equation and solve for t.
213.2 = 21.3t
t = 213.2/21.3
t = 10
Therefore, the time when s = 213.2 meters is approximately 10 seconds.