A constant force of 100N , directed upward, is applied to a 5.0kg toy rocket by the rocket's engine.

What is the rocket's acceleration?

I used the equation a= F/m to get 20 m/s2 but it was wrong and I don't know where to go from here still?

You forgot the weight

weight = m g = 5(9.81) = 49 N

so 100 N up, 49 down
net force = 51 N up

a = F/m 51/5 = 10.2 m/s^2

To find the rocket's acceleration, you started correctly by using the equation a = F/m, where "a" represents acceleration, "F" represents force, and "m" represents mass. However, your answer of 20 m/s^2 is incorrect. Let's go through the calculation step by step to identify the issue.

Given:
Force (F) = 100N
Mass (m) = 5.0kg

Using the equation a = F/m, we substitute the given values:

a = 100N / 5.0kg

Calculating this expression gives us:

a = 20 m/s^2

So, your initial calculation is indeed correct. The rocket's acceleration is 20 m/s^2. If this answer was considered incorrect, there might be other factors or information missing from the problem that needs to be taken into account. Please provide any additional details you have, and we can reassess the problem.