engineering physics MCQ #3714

A force F = 2t N acts on a 3 kg body. What is its velocity at t = 4 s, if u = 0?

engineering physics MCQ #3714

  1. Question 1

    Q1. A force F = 2t N acts on a 3 kg body. What is its velocity at t = 4 s, if u = 0?

    • A) 4 m/s
    • B) 8/3 m/s
    • C) 16/3 m/s
    • D) 32/3 m/s

    Answer: 16/3 m/s

    Explanation: ∫F dt = ∫(2t) dt = t², from 0 to 4 = 16, Δp = 16, mv - mu = 16, v = 16 / 3 m/s.