My definition: (Easiest to remember in my opinion).
Kinematics is the branch of mechanics that deals with pure motion, without reference to the masses or forces involved in it.
More information:
Apart from the interactions between things that alter motion, kinematics is a human construct that is most frequently linked to the study of motion. Thus, for instance, high school students learn how to recognize, gauge, and compute an object's location, its displacement from that position, how its position might vary over time, as well as its velocity, acceleration, and how these entities relate to one another. A automobile at a stoplight starts to move into a different position as it accelerates and picks up speed. Knowing the length of the acceleration and the magnitude of the acceleration allows one to anticipate the car's position in the future.
Later on, students learn forces, which are the push and pull interactions between things. This helps us comprehend how forces between objects modify their velocities. For instance, the automobile is accelerated by being pushed down the road by the friction force of the road on the tires of the vehicle (the contact between the tires and the road).
Kinematics is simply focused on describing 5 aspects of motion. They are:
- Time - how long the object is in motion
- Displacement/Distance - how far the object moves while it is in motion
- Final Velocity - what is the final velocity of the object (this isn’t always 0)
- Initial Velocity - what is the initial velocity of the object (again, not always 0)
- Acceleration - what is the rate of change of the object’s velocity
Another way of saying it:
Kinematics is the study of motion independent of charge and mass
- s = vt
- vf = vi +at
- s = vit + 1/2 at^2
- 2as = vf^2 -vi^2
these equations contain no mass and charge
if we multiply these equations by mass m then they become dynamical
- mvf = mvi + mat
- pf = pi + Ft
- F = pf - pi /t
so we can say, kinematics is the language of motion
Thank you,
Eddie
