JAMB Physics 2022 Objective — Question 25
Question 25 of 41 from the Joint Admissions and Matriculation Board (JAMB) Physics 2022 Objective paper, with the correct answer and a full explanation.
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Rocket ejects material at 150 ms⁻¹, mass rate 1.2 kg/s. Force to hold fixed:
- A. 180 NCorrect
- B. 120 N
- C. 150 N
- D. 40 N
Explanation
F=v×dm/dt=150×1.2=180 N.
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