Force is the external agent that produces motion. Basically, there are two main types of forces, **contact forces, and non-contact forces**.

Gravity or gravitational force is **the force of attraction between any two objects in the universe**. The force of attraction depends on the mass of the object and the square of the distance between them. It is by far the weakest known force in nature.

Field forces are also called noncontact forces or at-a-distance forces. There are four types of field forces: **gravity, electromagnetic forces**, and the strong force and the weak force found in atoms.

Pressure is defined to be **the amount of force exerted per area**. P = F A {\Large P=\dfrac{F}{A}} P=AF. So to create a large amount of pressure, you can either exert a large force or exert a force over a small area (or do both).

**Effects of force with examples :**

- It can make a stationary object move. Example: pushing a box at rest on the table brings the box in motion.
- It can stop a moving object.
- It can change the speed of a moving object.
- It can change the direction of a moving object.
- It can change the shape or size of an object.

The SI unit of force is the **newton**, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.

Answer: Pressure is defined as **force per unit of area**. Pascal (Pa) is the SI unit of pressure, which is Newton (N) per metre (m^{2}) i.e. N/m^{2}. Atmospheric pressure is defined as the pressure exerted on an object by the air above it.

Pressure is a measure of how much force is acting upon an area. Pressure can be found using the equation **pressure = force / area**. Therefore, a force acting over a smaller area will create more pressure.

**Force is the push and pull action resulting in the change of motion and direction, whereas pressure is the physical force per unit area**.

Also known as **non-local gravity**. Some physicists believe that Einstein's theory of gravity will have to be modified – not at small scales, but at large distances, or equivalently, at small accelerations. This would change gravitation to a non-local force.

A force is **a push or pull upon an object resulting from the object's interaction with another object**. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force.

Force is the external agent that produces motion. Basically, there are two main types of forces, **contact forces, and non-contact forces**.

**A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), 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.

**Or to read about an individual force, click on its name from the list below.**

- Applied Force.
- Gravitational Force.
- Normal Force.
- Frictional Force.
- Air Resistance Force.
- Tension Force.
- Spring Force.

Force is **a physical cause that can change the state of motion or the dimensions of an object**. There are two types of forces based on their applications: Contact Force. Non-Contact Force.

When force is applied to the per unit area of a surface, it is called pressure. **If the surface area decreases, the pressure increase simultaneously when the surface area increase, pressure decreases**.

Probability represents the likelihood of an event occurring for a fraction of the number of times you test the outcome. **The odds take the probability of an event occurring and divide it by the probability of the event not occurring**.

The general formulas for the change in x and the change in y between a point (x1,y1) ( x 1 , y 1 ) and a point (x2,y2) ( x 2 , y 2 ) are: **Δx=x2−x1,Δy=y2−y1**. Δ x = x 2 − x 1 , Δ y = y 2 − y 1 .

**Advantages**

- Reduced data redundancy.
- Reduced updating errors and increased consistency.
- Greater data integrity and independence from applications programs.
- Improved data access to users through use of host and query languages.
- Improved data security.
- Reduced data entry, storage, and retrieval costs.

Rotational inertia depends both on **an object's mass and how the mass is distributed relative to the axis of rotation**.

**How to become a maths teacher**

- Complete your undergraduate degree.
- Pursue a graduate degree in your specialty.
- Attend a school direct training program.
- Complete school-centred initial teacher training.
- Gain experience in an entry-level position.
- Stay up-to-date with renewing your teaching credentials.

Dated : 13-May-2022

Category : Education