Physics Quiz - Forces

Normal force

When two objects compress into each other. A normal force is perpendicular to the surface

Friction force

When two surfaces slide or shear along each other.

Traction force

The friction force that allows us to step forward or keeps car wheels from spinning

Push force or pull force

A combination of both compression and shear forces are present when we touch things.

Tension forces

Stretching forces within strings or chains

Thrust force

A propelling force when an object interacts with a fluid, like water or air

Drag

A resistive force when an object interacts with a fluid, like water or air

Buoyant force

Floating force when an object interacts with a fluid, like water or air

Lift force

Steering (or Bernoulli’s) forces when an object interacts with a fluid, like water or air

Non-contact forces

When two objects interact without touching, they exert forces through a force field. Some non-contact force examples are gravitational forces, electric forces and magnetic forces.