Forces And Their Interactions Flashcards
What are properties of scalar quantities
Have magnitude only
What are properties of vector quantities
They have magnitude and associated direction
How are vector quantities represented by
Arrows which represents magnitude, direction of arrow and direction of quantity
what is a force?
a push or pull that acts on objects due to the touching of another object
what’s a contact force?
the objects are physically touching
whats a non contact force?
the objects are physically separated
whats an example of a contact force?
friction, air resistance, tension and a normal contact force
whats an example of a non contact force?
gravitational force, electrostatic force and a magnetic force
what type of quantity is a force?
vector
what is weight?
weight is the force acting on an object due to gravity.
why is the force of gravity close to the earth?
because of the gravitational field around earth
what does the weight of an object depend on?
the gravitational field strength at the point where the object is
how can you calculate the weight of an object?
weight= mass x gravitational field strength
what else can the weight can be considered as?
centre of mass
how is the weight of an object relate to the mass of an object
they are directly proportional
how is weight measured?
using a newton meter
