The dimensional formula for impulse is

Impulse = Force X Time

Hence, the dimensional formula for impulse is [M L T^-1].

Explanation

Impulse can be defined as the sudden force acting on an object for a short interval of time.

Dimensional formula of impulse

We know that the formula of force is given by

Impulse= Force X Time

Also from Newton’s second law of motion

Force = Mass X Acceleration

Hence the dimensional formula of force is M¹ L¹ T^-2

On substituting the force dimensional formula in the formula of impulse we get,

Impulse = Force × Time

I = [M¹ L¹ T^-2] × [T] = [M¹ L¹ T^-1]

The impulse is dimensionally described as [M¹ L¹ T^-1].