Solve the below problem:
Q: A 3-kg model rocket is launched vertically and reaches an altitude of 60 m with a speed of 28 m/s at the end of powered flight, time t = 0. As the rocket approaches its maximum altitude it explodes into two parts of masses mA = 1 kg and mB = 2 kg. Part A is observed to strike the ground 74.4 m west of the launch point at t = 5.85 s. Determine the position of part B at thattime.