Final answer:
The landing took 0.2 seconds.
Step-by-step explanation:
To calculate the time taken during the landing, we will use the equation:
Force = Change in momentum / Time
In this case, the force exerted is given as 600 N and the change in momentum is 120 kgm/s. Rearranging the formula, we get:
Time = Change in momentum / Force
Substituting the given values into the equation, we have:
Time = 120 kgm/s / 600 N = 0.2 seconds
Therefore, the landing took 0.2 seconds.