Final answer:
The original question cannot be answered without additional information about time or distance for the acceleration. However, the average acceleration for a dragster reaching a top speed of 145 m/s in 4.45 s is estimated to be 32.6 m/s².
Step-by-step explanation:
The question seems to contain a typo since typically speed is measured in meters per second (m/s), not meters per second squared (m/s²) which is the unit for acceleration. Assuming the question asks for the acceleration of an object that reaches a top speed of 5.3 m/s, we cannot provide an acceleration value without additional information such as the time taken to reach this top speed or the distance over which the acceleration took place.
However, to answer the provided practice problem, to find the average acceleration for a dragster that reaches a top speed of 145 m/s in only 4.45 s, we would use the formula for average acceleration, which is a = (final velocity - initial velocity) / time. The initial velocity is 0 m/s (since it starts from rest), so the average acceleration a is (145 m/s - 0 m/s) / 4.45 s, which gives an average acceleration of approximately 32.6 m/s².