Inertia and Free Fall

Free Fall

is an object that is falling under the sole influence of gravity

Law of Inertia

“An object at rest stays at rest and an object in motion stays in motion unless acted upon an unbalanced force

Dynamics

Forces and their influence on the motion

Force

any interaction that if unopposed will alter the motion of an object.

Tension

Force that the string exerts on an object to which it is attached

Normal Force

is a force perpendicular to the surface of contact or the force makes 90° with the surface of contact which along the horizontal line.

Frictional force

Resistance to the motion because of the interactions between the body and the surface

Non-contact force

gravitational force and electromagnetic force

Inertia

tendency of an object to resist change in its state of motion

Mass

Amount of matter present on an object

Weight

is a force acting on an object