Final answer:
The average force produced by the model rocket's engine, which delivers an impulse of 6.0 newton-seconds over 0.75 second, is 8.0 newtons.
Step-by-step explanation:
To calculate the average force produced by the model rocket's engine, we can use the concept of impulse. Impulse is the product of the average force and the time interval over which the force is applied. It is given by the formula impulse = average force x time.
In this case, the impulse is given as 6.0 newton-seconds and the time is 0.75 seconds. Therefore, we can rearrange the formula to solve for the average force:
Average force = impulse / time
Plugging in the given values:
Average force = 6.0 Ns / 0.75 s
Average force = 8.0 N
The average force produced by the model rocket's engine is 8.0 newtons.