forces and speeds Flashcards
air resistance
the force on an object moving through the air that causes it to slow down
drag
the force acting on an object in water or air that makes it slow down
friction
the force that resists movement because of contact between two objects
weight
the force that pulls an object to the center of the earth
mass
the amount of matter an object is made up of ( how heavy something is)
push and pull
types of forces
what is a force
a push or pull on an object
newton meter
a piece of equipment used to measure force
gravity
a force that pushes objects to the centre of a planet or moon
upthrust
a force pushing up on an object in liquid
speed=
distance/time
time=
distance/speed
distance=
time x speed
1 newton in kg=
10kg
equilibrium
balanced
thrust
a push caused by an engine
lift
a force pushing up on an object in the air
anomaly
a result that doesnt fit the pattern or the trend
line of best fit
a line that best fits the relationship of two fits in a graph
boyancy
when an object goes under water an rises back to the surface
motion
when an object changes its position over time
definition of speed
how fast something is able to move
balanced force
when there are two forces and both of them are the same strength
unbalanced force
when there are two forces but one of them is stronger than the other, causing the object to move in that way
mass is measured in
kilograms
weight is measured in
newtons
hooke’s law is
the law that says if you double the force on an object the extension will double
magnetic force
force that is exerted on a magnetic material brought into a magnetic field.
magnetism
it is a force of attraction or repulsion between substances such as iron, nickel, cobalt and steel
electrostatic force
the force acting between two charged objects
