Forces and Motion Concepts

This set of flashcards covers key concepts related to forces and motion, including definitions of various types of forces, motion states, and the effects of friction.

Net Force

The sum of all forces acting on an object; measured in Newtons (N).

Friction

A force that opposes the sliding motion of two surfaces in contact.

Static Friction

when an object is at rest

Kinetic Friction

when an object is moving

Equilibrium

forces are equal (no motion)

Applied Force

push or pull

Gravity

The downward force due to the attraction between two masses.

Normal Force (FN)

The upward force exerted by a solid surface on an object resting on it.

Air Resistance

opposes motion through the air

Fluid Friction

when an object goes through a liquid

Tension

pulling force (string or rope)

Dynamic Equilibrium

When an object is moving at a constant velocity and the net force is zero.

Surface Roughness

how much friction

Smooth Surface

allows object to slide