What is a force?What is quantity of force called?What is cause of force?What is effect of force?

PHYSICS Scholars

Our question is:

What is a force?
What is quantity of force called?
What is cause of force?
What is effect of force?

Questions are simple seems to be, but how hard is it to define exactly?

Try please... We are here to give you an exact answer.
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AZEEZ:

The two words PUSH and PULL are often used to define what a force is.

In real sense, PUSH and PULL are activities enacted on a body by physique, mechanic ... 

PUSH and PULL are physical activities enacted on a body to move or to stop. No where here PUSH or PULL, a source of force

As  examples, Gravitatiinal force, magnetic force ..... are exerted between two objects even without contact. Here what is the source of such forces?

What kind of PULL or PUSH that exerts on objects, gravitational force?

Just think over it. Therefore PUSH and PULL are a kind of actions or activities which enact on a body to move or to stop. These activities are not called as Force. These actions cannot create a force upon a body, rather it can create an interaction between two objects whether the objects are in contact or not.

Force is defined as the interaction between two or more objects which is helpful to push or pull the object in certain direction.

If there is an interaction between two or more objects, then there must be force acting on those objects.

As per Newton's second law force is defined as the product of mass and acceleration.

Force is represented with the symbol F and its unit is Newton N.

What is the quantity of force called?

Magnitude, quantity and amount... All the terms are different.

Their significance is as follows: Quantity, amount, and magnitude are terms used to describe the size, extent, or degree of something. While they are related concepts, there are some differences in their meanings.

1. Quantity:

Quantity refers to the numerical value or count of something. It is often used to describe discrete objects or things that can be easily measured or counted.

For example, the quantity of apples in a basket or the quantity of people in a room.

2. Amount: Amount refers to the quantity of something that can be measured or expressed in units, such as weight, volume, or time. It is often used to describe continuous things or substances that can be measured, such as water or money.

For example, the amount of water in a glass or the amount of money in a bank account.

3. Magnitude: Magnitude refers to the size or extent of something, often in relation to other things. It is used to describe things that can be compared or measured on a scale, such as the magnitude of an earthquake or the magnitude of a problem.

Magnitude can also refer to the importance or significance of something, such as the magnitude of a decision or the magnitude of a scientific discovery.

While quantity, amount, and magnitude are related concepts, they differ in terms of what they measure and how they are expressed.. Quantity has numerical value and direction.

Amount and magnitude are directionless.

Force always requires at least two objects to interact with each other. In any cases like shutting or opening a door or drawer, there is the interaction between door and person or drawer and person.

In gravity, the earth and another object interact.

Thus force is a physical interaction between two objects.

Effect of force: FORCE can

1. change the state of a body from Rest to motion,
2. decrease the speed of the body or increase the speed of the body.
3. change the direction of motion
4. change the shape of body.
5. do any some of the above or all.

These are known as my Effects or effects of Force.

The effect of force differ when it's applied on (a) a rigid body (b) a non-rigid body ?

(a) When a force is applied on a rigid body, it does not change the interspacing of constituent molecules and the dimension, which can cause motion in it.

(b) When a force is applied on a non-rigid body, it changes the interspacing between its constituent molecules and dimension, which can produce motion in it.
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Linga Durai:

விசை என்பது ஒன்றை நகர்த்துவது அல்லது நிறுத்துவது. உந்த மாறுபாடே விசை.

உந்தம் என்பது தந்தை மற்றும் தாய் ஆகியோரால் வளர்ந்தேன் என சொல்லாமல் பெற்றோர் என ஒற்றை வார்த்தையில் சொல்வது போல்...
விசை நிறை சார்ந்தும் வேகம் சார்ந்தும் மாறும் ஆகவே இரண்டும் சேர்ந்து உந்தம். விசையின் விளைவு தருவதை திரும்ப தரும்.
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Telengani Sujatha:

1. Force is a push or pull ( in layman's language)
Force is an external agency which tends to change the state of rest or of uniform motion of a body. (As per the definition)
2. Quantity of force is the magnitude of force
3. Change in momentum
4. Effects of force... Change in shape/direction/speed
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Gevethaa:

An primary action that is required basically  but has some flaws/direct or  indirect effects ( this can be known or unknown)

Limitations: we know the fact that there is some constraints even before doing the action
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RV:

Force is that which changes or tends to change the state of rest or of uniform motion of a body along a straight line. It brings about the change in momentum on impulse when a force acts on body over some time.
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Padmavathi Ravichandran:

Force acts on any body which change its state of rest or motion
Force is a vector quantity which is a ector multiplication of mass and acceleration.
The cause of Force may differ for different types of Force
The effect of Force is measured by change in momentum
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Ramachandran Silaiyappan

This is only for my point of view that's all
1) what is a force?
Force is influences between two 
2)What is the quantity of force called?
Force depends on how strong or weak
3)What is the cause of force?
Attraction Or repulsion
4) What is the effect of force?becomes motion or Rest

This may be the other side of my coin, don't be serious.

What is a force?
Force is the union of two visions

What is the quantity of force called?
Actually indefinite

What is the cause of force?
Exactly attraction or repulsion

What is the effect of force?
Finally fall in love that's all
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Special Thanks to:

Thirumurugan, Suryanchal, Dr. Sekar Srinivasan,  Packia Selvan.