MOTION(Kinematics+Dynamics)

Motion

The change of position of a body or an object relative to time.

Kinematics

The study of motion without considering the forces that cause it.

Displacement ($s$)

How far a body or object is from its original position, measured in meters ($m$).

Speed ($v$)

The rate of change of distance, calculated as $\text{Distance} \div \text{Time}$.

Velocity ($u$ or $v$)

The rate of change of displacement, calculated as $\text{Displacement} \div \text{Time}$.

Acceleration ($a$)

The rate of change of velocity, calculated using the formula $a = \frac{v - u}{t}$, where $v$ is final velocity and $u$ is initial velocity.

Average Speed/Velocity

The total distance or displacement divided by the total time taken.

Aristotle's Conclusion on Force

The incorrect idea that force is directly proportional to velocity ($F \propto v$) and that an object stops moving immediately when the force stops.

Newton’s First Law

An object at rest stays at rest or an object in motion stays in constant motion unless acted upon by an external force.

Newton’s Second Law

The relationship defining force as mass times acceleration ($F = ma$).

Newton’s Third Law

If object A exerts a force on object B, then object B exerts a force on object A that is equal in size but in the opposite direction.

Inertia

The resistance of an object to change its state of motion.