A 2000-kg truck traveling at a speed of 6.0 m/s makes a 90° turn in a time of 4.0 s and emerges from this turn with a speed of 4.0 m/s. What is the magnitude of the average resultant force on the truck during this turn?
1) 4.0 kN
2) 5.0 kN
3) 3.6 kN
4) 6.4 kN
5) 0.67 kN
Answer: 3