define-
1.force
2.pressure
3.contact force
4.Non-contact force.
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Answers
Answer:
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. ... Pressure may also be expressed in terms of standard atmosphericpressure; the atmosphere (atm) is equal to thispressure, and the torr is defined as 1⁄760 of this.
contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.
non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.
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Answer:
Here is ur answer:-
• Force is defined as a push or pull acting on a body.
• Pressure is defined as the force acting per unit area.
• Forces that act only when there is a physical contact between two interacting objects are known as contact forces.
• When force is applied without touching body ,then it is called as non-contact force.