A constant force acts on an object of mass 8 \(kg\) for a duration of 3 \(s\). It increases the object’s velocity from 5 ms1 to 7 ms1. Find the magnitude of the applied force. Now, if the force was applied for a duration of 9 \(s\). what would be the final velocity of the object?
 
 ms1
 
Important!
Note: Enter your answer with 2 decimal digits.