Physics

Pressure 

Pressure=AreaForce​

Force 

Force = mass × acceleration 

The law of conservation of Energy

Energy cannot be created or destroyed, but it can be change from one form to another

Potential energy

Potential energy = m × g × h

m = mass,
g = gravitational force,
h = height

 

Kinetic energy

Kinetic erergy =2mv2​

m= mass,
v = speed,

Gain in kinetic energy is a loss of potential energy.

Density 

 Density =volume mass
​      
     

 ९ =vm
​

Workdone

Work done = Force × Distance moved in the direction of force 

W = F × d

Speed 

Speed =time Distance 
​      
     

Acceleration 

Average acceleration =time taken Change in velocity 
​      
 
    

a =tv - u
​

u = Initial velocity
v = Final velocity

 

Negative acceleration is called deceleration or retardation

Moment

Moment of a force about a point = force × perpendicular distance from pivot

Principle of the moment

Clockwise moment =anticlockwise moment