Basic Physics Formulas, Definitions and SI Units

Basic Physics Formulas: Physics is all about defining fundamental constituents and our universe's interaction. Have we ever thought about why the sky remains blue in the day and changes its color during the phases of the day or how we are able to stand on the earth while we fly on the moon? Physics has all your answers. The subject has multiple fields, including nuclear Physics and quantum Physics, to study and make a career in. When we learn the subject, we come across multiple concepts and numerical and mathematical questions which require formulas to solve them. Therefore, in this blog, we will be talking about the Basic Physics Formulas that you must learn if you are a science student or preparing for any competitive. Scroll down to learn more about Physics and Basic Physics Formulas. 

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Table of Content

List of Basic Physics Formula

Acceleration Formula

Newton’s Second Law

Average speed Formula

Power Formula

Density formula

Pressure formula

Ohm’s law formula

Weight formula

Kinetic energy formula

Work formula

Displacement formula

Frequency Formula

Fahrenheit formula

Torque formula

Pendulum formula

Mass Formula

SI Units

Important instruments and devices

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List of Basic Physics Formula 

Here are the Basic Physics Formulas. Let’s have a look at them-
 

Acceleration Formula

Acceleration is the rate of change in velocity to the change in time. It is indicated with the symbol 'a'.
Formula: a =(v-u)/t
 

Newton’s Second Law

This law is very prominent among the Basic Physics Formulas. It can help express the product of mass and the Acceleration of the body. 
Formula: F = ma
 

Average speed Formula

This Formula is used to determine the average speed (S) of the moving body for the distance covered (D) and the time duration (T).
Formula: S = d/t
 

Power Formula 

Energy refers to the capacity to perform an activity or task. However, the energy used to carry out an activity for a particular time period is called power. It is among the most commonly used Basic Physics Formulas. 
Formula: P=W/t
 

Density formula 

The density formula describes the denseness of material in a particular given area.
Formula: P=m/V
 

Pressure formula

The amount of pressure applied body unit of an area is called the pressure of an object.
Formula: P=F/A


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Ohm’s law formula

Among the most prominent Basic physics formulas, the ohms law is described as the current (I) passing through some conductor object is directly relative to the potential difference between the two endpoints of the conductor object. 
Formula: V= I × R
 

Weight formula

This formula determines the force with which an object falls due to gravity.
Formula: W=mg
 

Kinetic energy formula

Kinetic energy is the capacity that is possessed by a body because of its state of motion.
Formula: E = 1/2 mv²
 

Work formula

The work formula determines the multiplication of the magnitude of displacement (D) and the element of the force.
Formula: W = F × d × cosθ
 

Displacement formula

Displacement refers to the change in the position of the object from its initial position to its final position. It is among the most prominent Basic Physics Formulas.
Formula: D = Xf–Xi = ΔX
 

Frequency Formula

Frequency is the revolutions completed per second or the number of wave cycles.
Formula: F =v/λ
 

Fahrenheit formula

 It is a conversion formula for temperature.
Formula: F = (9/5× °C) + 32
 

Torque formula

Torque is the rotational force or turning effect. 
Formula: T = F × r × sinθ
 

Pendulum formula

This formula determines how long the pendulum takes to swing back and forward in seconds. It is among the most commonly used Basic Physics Formulas.
Formula: T = 2π√Lg
 

Mass Formula

The mass formula depicts the relationship between force and mass.
Formula: F = ma or m = F/m
 

SI Units

SI units are given less significance as a concept. However, they are very important. Below are some of the most important SI units you must remember if you are a science student or preparing for any competitive exams.

These are an important part of Basic physics formulas.

Name of Quantity	SI Unit	Unit
Electric Current	Ampere	A
Force	Newton	N
Electric Resistance	Ohm	Ω
Atmospheric Pressure	Bar	bar
Magnetic Flux	Maxwell	Mx
Luminous	Candela	Cd
Wavelength of Light	Angstrom	Å
Pressure	Pascal	Pa
Magnetic Induction	Gauss	Gs
Thermodynamic/ Temperature	Kelvin	K
Mass	Kilogram	kg
Electric Charge	Coulomb	C
Energy	Joule	J
Time	Second	s
Amount of Substance	Mole	Mole
Length	Metre	m
Power	Watt	w

 

Important instruments and devices

Most of us are aware of devices and instruments used in multiple experimental physics. These gadgets can be used to evaluate basic physics formulas and concepts. Let us have a look at these devices and instruments with their simplified definitions.

Anemometer 
This device is used to calculate the speed of the wind.

Viscometers
This instrument is used to determine the viscosity of a fluid.

Voltmeter
A voltmeter can help determine the electrical potential between two given points.

Speedometer
A speedometer can help determine and depict the speed of a vehicle.

Dynamometer
This gadget can help determine the torque force and the power of a body.

Barometer 
A barometer is a scientific device that is used to evaluate atmospheric pressure.

Accelerometer
This instrument measures acceleration. An accelerometer is used to derive many Basic Physics Formulas. 

Galvanometer
This electromechanical device is used to detect and indicate the electric current.

Seismometer
This device helps measure the random motion inside the earth's crust caused by a volcanic eruption or earthquake.