Physics: Mechanics & Materials

scalar quantity

Has magnitude only, eg. mass, speed, distance

vector quantity

Has both magnitude and direction, eg. weight, velocity, acceleration, force

How do you connect a resultant force triangle?

From head to tail.

moment equation

force x distance (m=fd)

moment unit

Nm

Coplanar forces

Forces lying on the same plane

Gradient of a displacement time graph?

= velocity

Gradient of a speed time graph?

= acceleration

Area under speed time graph?

The displacement of the object

Area under acceleration time graph?

= object’s change in velocity