Universal Constant of Gravitation is represented by G and is derived from Newton’s law of gravitation. Newton’s law states that
F=(Gm₁m₂)/r²
So
G=(Fr²)/m₁m₂

Where F is Force between masses m₁, m₂ at a distance r

Dimensional Formula of Force= M¹L¹T^-2

Thus
Dimensional Formula of Universal Constant of Gravitation= (M¹L¹T^-2 x L²)/(M¹ x M¹)

Dimensional Formula of Universal Constant of Gravitation = M^-1L³T^-2
SI unit of Universal Constant of Gravitation is Nm²kg^-2

or

Dimensional Formula of Gravitational constant = M^-1L³T^-2

Pressure is defined as force per unit area.Mathematically its formula is

Pressure = Force/Area
Now, we have already derived the dimensional formula for force and area in previous posts. So
Dimensional Formula of Force= M¹L¹T^-2
Dimensional Formula of Area= M⁰L²T⁰
Thus
Dimensional Formula of Pressure = (M¹L¹T^-2)/(M⁰L²T⁰)
Dimensional Formula of Pressure = M¹L^-1T^-2
SI unit of Pressure is  Nm^-2(Nm^-2 is also called as Pascal).
we can also state that SI unit of Pressure is Pascal
Note – Stress also has the same dimensional formula

Impulse is defined as the integral of a force with respect to time. In other words the change in momentum is called Impulse. Formula of Impulse is

Impulse = Force x Time
Now
Force = Mass x Acceleration

As derived earlier
Force = M x M⁰L¹T^-2

So Dimensional Formula of Impulse= M¹L¹T^-1
SI unit of Impulse is Ns

Force is defined as an influence that causes a mass body to accelerate or change its velocity. Mathematically its formula is

Force = Mass x Acceleration
Acceleration = Change in Velocity/Time Taken
Acceleration = M⁰L¹T^-2

Substituting this in Force formula we get
Force = Mass x Acceleration
Force = M x  M⁰L¹T^-2

So Dimensional Formula of Force= M¹L¹T^-2
SI unit of Force is kg ms^-2 popularly known as  Newton (N)

Note – Thrust and Tension also has the same Dimensional formula as that of Force

Acceleration is defined as change in velocity per unit time. So its formula is
Acceleration = Change in Velocity/Time Taken

Now
Velocity = Displacement/Time
Velocity = L/T
So
Acceleration = L/T²

So Dimensional Formula of Acceleration= M⁰L¹T^-2
SI unit of Acceleration is ms^-2

The Dimensional Formula of Acceleration due to gravity (g) is also same as acceleration.