Impulse is defined as the product of force and the time duration for which it acts (Impulse = Force × time). It is also equivalent to the change in momentum.

1. Formula: $I = F \times \Delta t$
2. Dimensional Analysis:

• Force ($F$): Mass × Acceleration = $[M] \times [LT^{-2}] = [MLT^{-2}]$
• Time ($t$): $[T]$

3. Calculate Dimensions: $[I] = [MLT^{-2}] \times [T] = [MLT^{-1}]$ Alternatively, since Impulse equals change in momentum ($\Delta p = m \Delta v$): $[p] = [M] \times [LT^{-1}] = [MLT^{-1}]$