**1.What Is the Formula of Pressure in the S.I. Unit?**

- The formula of pressure in the S.I. unit is- Pressure = Force/ Unit Area = N/ m2 i.e. Newton per metre square.

**2.****Identify the types of motions in the following images-**

** **

- The motion of a satellite- Circular motion.
- The motion of a moving car- rectilinear motion.
- The motion of a swing- Periodic motion.

**3.****See the Picture and Answer the Following Questions-**

**Which Point Has the Highest Sideways Pressure?****Which Point Has the Lowest Sideways Pressure?****What Will Happen to the Lateral Pressure of C if the Water Level Is Reduced?****How Can the Magnitude of Pressure Be Increased at the Bottom of a Container Half-Filled With a Liquid?**

- Point C has the highest sideways pressure.
- Point A has the lowest lateral pressure.
- The lateral pressure will reduce at point C if the water level is reduced.
- If a container is half-filled with a liquid, the pressure at the bottom can be increased by pouring more liquid into that container.

The height of liquid inside a container is directly proportional to the pressure at the bottom of the container.

**4.A Force of 400 N Is Applied to an Area of 4 m2. Calculate the Pressure Applied to the Site.**

- The pressure applied to the area will be:

Pressure= Force/ Area that means 400/4 = 100 Pascal.

**5.What is revolution of the Earth?**

- The rotation of Earth around the sun in a circular orbit is called revolution.
- One revolution takes 365.26 days to complete.

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