Forces pt1 (Scalar, contact, Gravity, Work done, Elasticity, moment) Flashcards
What is a force?
A force is a push or pull that acts on an object due to the interaction with another object.
what is a scalar quantity?
magnitude only
what is a vector quantity?
magnitude and direction
What is are contact forces?
when the objects are physically touching
What is a non-contact forces?
when the objects are physically separated.
examples of non-contact forces (3)
gravitational force electrostatic force magnetic force
What type of quantity is force?
vector
Examples of contact forces?
friction, air resistance, tension and normal contact force.
what is gravity?
a force of attraction between all masses
What is the gravitational force close to Earth caused by?
the gravitational field around theEarth.
what is mass?
the amount of matter an object contains - this is constant
what is the weight?
the force acting on an object due to gravity
what is the equation for gravitational field strength, mass and weight?
weight = mass x gravitational field strength
What is the connection between weight and mass
(proportion)
they are directly proportional
what is work done?
when a force causes an object to move