Final answer:
The acceleration of the rocket sled is calculated as the change in velocity divided by the time taken, resulting in an acceleration of 6.0 m/s².
Step-by-step explanation:
To calculate the acceleration of the rocket sled, you can use the formula for acceleration, which is the change in velocity divided by the time taken for the change. The sled accelerates from 20.0 m/s to 50.0 m/s in a time of 5.00 seconds. The change in velocity (Δv) is 50.0 m/s - 20.0 m/s = 30.0 m/s. Therefore, the acceleration (a) is Δv/t = 30.0 m/s / 5.00 s = 6.0 m/s².