The thrust of a rocket launched vertically upward is 400 kN, and the gravity acting

The thrust of a rocket launched vertically upward is 400 kN, and the gravity acting on the rocket is 100 kN. Determine the resultant of these forces.

Since the thrust vector of the launching rocket is oppositely directed to the gravity vector, we calculate the resultant of the given forces by the formula: Fр = Ftyag – Ft.

Values of variables: Ftyag – traction force (Ftyag = 400 kN); Ft is the force of gravity (Ft = 100 kN).

Let’s make a calculation: Fr = Ftyag – Ft = 400 – 100 = 300 kN.

Answer: V. The resultant force is 300 kN.