Final answer:
The maximum height reached by the object, calculated using the formula for motion under gravity, is approximately 11.48 meters, which does not match any of the provided multiple-choice options.
Step-by-step explanation:
The question is asking to find the maximum height reached by an object thrown straight up with an initial velocity of 15 m/s. Using the equation of motion under constant acceleration due to gravity, the maximum height (H) can be found using the formula H = v2 / (2g), where v is the initial velocity and g is the acceleration due to gravity (9.8 m/s2). Substituting the given values, we get H = (15 m/s)2 / (2 * 9.8 m/s2) which simplifies to approximately 11.48 meters. None of the provided options (A) 7.5 meters, (B) 15 meters, (C) 22.5 meters, (D) 30 meters match the calculated value exactly, but the closest option would typically be expected. However, since the question might contain a typo or error regarding the options, it's best to report the accurate calculation.