Single correct option
The dimensional formula of impulse is
- A. [MLT^-1]
- B. [MLT^-2]
- C. [ML^2T^-2]
- D. [ML^2T^-1]
Show answer and solution
Answer: (A) [MLT^-1]
Impulse equals force multiplied by time, so its dimensions are [MLT^-2][T] = [MLT^-1]. This is the same as linear momentum, which is why impulse equals the change in momentum. [MLT^-2] is only force, and [ML^2T^-2] is work or energy.
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