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The chapter focuses on understanding force and pressure, explaining how forces can cause changes in motion, shape, and direction of objects. It introduces the concepts of contact and non-contact forces, emphasizing their impact on everyday activities. Additionally, it explores the relationship between force and pressure, including atmospheric pressure and the behavior of liquids and gases under pressure.
Chapter 820 sections
The chapter focuses on understanding force and pressure, explaining how forces can cause changes in motion, shape, and direction of objects. It introduces the concepts of contact and non-contact forces, emphasizing their impact on everyday activities. Additionally, it explores the relationship between force and pressure, including atmospheric pressure and the behavior of liquids and gases under pressure.
Force could be a push or a pull.
A force arises due to the interaction between two objects.
Force has magnitude as well as direction.
A change in the speed of an object or the direction of its motion or both implies a change in its state of motion.
Force acting on an object may cause a change in its state of motion or a change in its shape.
A force can act on an object with or without being in contact with it.
Force per unit area is called pressure.
Liquids and gases exert pressure on the walls of their containers.
The pressure exerted by air around us is known as atmospheric pressure.
A push or pull that can cause an object to change its state of motion.
The force applied per unit area on a surface.
A force that requires physical contact between objects to act.
A force that acts without physical contact, such as gravitational or magnetic force.
A force that opposes the motion of an object in contact with a surface.
The pressure exerted by the weight of air in the atmosphere.
Total Questions
2
Estimated Time
4 min
Passing Score
70%
2 more questions available