newtons laws of motions Flashcards
what is newtons first law of motion
law of inertia- a body will continue at rest or uniformed velocity unless acted upon by an external or unbalanced force
what is newtons second law of motion?
law of acceleration- a bodies rate of change in momentum is proportional to the size of force applied and acts in the same direction as the applied force
what is newtons third law of motion?
law of reaction- for every force applied there is an equal and opposite reaction force
what is acceleration
the rate of change in velocity
what is momentum
the quantity of motion possesed by a movig body
what is acceleration measured in
metres per second per second , m/s/s or m/s^2
what is the equation for acceleration
(final velocity-initial velocity) / time taken
final velocity take initial velocity divided by time taken
what is force?
the push or pull that chnages a bodys state of motion
what is force measured in?
N or newtons
how do you calculate force?
force = mass x acceleration
F=MxA
what is velocity?
the rate of change in displacement
what is velocity measured in?
metres per second
m/s
how to calculate velocity?
displacement / time taken
dispacement divided by time taken
what is momentum measured in
kilogram meters per second
kgm/s
what is displacement
the shortest straight line route from the start line to the finish line
