Force
A force is a push or pull that can cause an object with mass to accelerate.
The SI unit of Force is Newton (N)
The SI unitof mass is Kilogram (Kg)
The SI unit of accelerationis the meter per second squared (m/s2)
Work
Work is the amount of energy transferred by a force.
 | Work |
 | Force |
 | distance |
 | Total work |
Where
| W | = | Work |
| Wtotal | = | total work |
| F | = | force |
| D | = | distance |
| M | = | mass |
| vinitial | = | initial velocity |
| vfinal | = | final velocity |
The SI unit of workis the Joule (J), which is defined as the work done by a force of one newton acting over a distance of one metre.
The SI unit of Force is Newton (N)
The SI unitof mass is Kilogram (Kg)
The SI unit of distanceis the meter (m)
The SI unit of velocityis the meter per second (m/s)
POWER
Power is the rate at which work is done.
The SI units for mechanical and electrical Power are the Watt (W), and the Watt (electrical) (We) respectively.
Power is the rate of doing work, or at which energy is converted. It can be thought of as - "amount
of energy used to perform work, or converted from one form to another,
in a specified period of time, namely, in a second"
Power and work
Power and displacement
 | Power |
 | Force |
 | Displacement |
 | Time |
Power and velocity
Kinetic Energy
Kinetic Energy is defined as the work needed to accelerate a body of a given mass from rest to its current velocity.
The kinetic energy
of an object is the energy which it possesses due to its motion.It is
defined as the work needed to accelerate a body of a given mass from
rest to its stated velocity. Having gained this energy during its
acceleration, the body maintains this kinetic energy unless its speed
changes. The same amount of work is done by the body in decelerating
from its current speed to a state of rest.
 | Kinetic energy |
 | mass |
 | velocity |
Where
Ke = Kinetic Energy
M = mass
v = Velocity
Potential energy
Potential energy is the stored energy of position possessed by an object.
In physics, potential energy
is the energy of an object or a system due to the position of the body
or the arrangement of the particles of the system.The SI unit for
measuring work and energy is the Joule (symbol J).
 | Potential energy |
 | Mass |
 | Acceleration of gravity |
 | Height |
Centrifugal Acceleration
Acceleration directed toward the center of a circular path. This is called as Centripetal or Centrifugal acceleration.
Centrifugal acceleration
 | Centrifugalacceleration (meter per second squared) |
 | Velocity (meter per second) |
 | Radius (meter) |
Centrifugal force
Centrifugal forceis
the apparent outward force that draws a rotating body away from the
center of rotation. It is caused by the inertia of the body as the
body's path is continually redirected. In Newtonian mechanics, the term centrifugal force
is used to refer to one of two distinct concepts: an inertial force
observed in a non-inertial reference frame, and a reaction force
corresponding to a centripetal force.
Centripetal Force:
If m = Mass, r = Circular Radius, v = Velocity.
Radius:
Velocity:
Circular Velocity
The
velocity at which a body must move in order to maintain an orbit at the
outer edge of the earth's atmosphere. This velocity is called as
Circular Velocity.
Circular Velocity:
Circular velocity
 | circular velocity (meter per second) |
 | Radius (in meter) |
 | Period (in second) |
Velocity
If
v0 = initial velocity
v = final velocity
vave = average velocity
a = acceleration
t = time
?x = distance or displacement
Velocity
 | velocity |
 | acceleration |
 | time |
 | initial velocity |
Average Velocity
 | average velocity |
 | initial velocity |
 | velocity |
Displacement
 | distance or displacement |
 | time |
 | average velocity |
Kinetic friction
 | Kinetic friction |
 | Kinetic friction coefficient |
 | Normal force |
Newton Law of Gravity
Newton
Law of Gravity states that Every particle attracts every other particle
with a force that is proportional to the product of their masses and
inversely proportional to the distance between them.
Newton's law of gravity
| Gravitational force exerted between two objects |
| Mass of object 1 |
| Mass of object 2 |
| Distance between the objects |
Kepler's
Third Law states that The squares of the orbital periods of planets are
directly proportional to the cubes of the semi-major axis of the
orbits.
| Satellite orbit period |
| Satellite mean orbital radius |
| Planet mass |
Escape
Velocity is the minimum velocity needed to escape the gravitational
field of a planet or other body. It is also called as Critical or Escape
Speed.
 | Escape or critical speed |
 | Planet mass |
 | Planet radius |