Question

14. A radio-controlled model airplane has a momentum given by [(−0.75𝑘𝑔 ∙ 𝑚 𝑠 3 ⁄ )𝑡 2 + (3.0𝑘𝑔 ∙ 𝑚⁄𝑠)]𝑖̂+ (0.25𝑘𝑔 ∙ 𝑚 𝑠 2 ⁄ )𝑡𝑗̂. What are the 𝑥-, 𝑦-, and 𝑧-components of the net force on the airplane

Answer 1

$$F_x=-2(0.75)t=-1.5t\ N\\F_y=0.25\ N\\F_z=0\ N\\$$