newtons laws/key terms and calculations

what is the name of newtons first law

Law of Inertia

what is the name of newtons second law

law of acceleration

what is the name of newtons third law

law of reaction

define newtons first law

a body is at rest velocity or constant velocity until acted upon by an external forces

define newtons second law

an objects rate of change in momentum is proportional to the size and direction as the force applied

define newtons third law

For every action there is an equal and opposite reaction force

define distance

the total length covered from start to finish

what is distance measured in

metres

define displacement

the shortest straight line route from start to finish

what is displacement measure in

metres

define speed

rate of change in distance

what is the equation for speed

distance / time

what are the units for speed

Metres per second (m/s)

define velocity

rate of change of displacement

what is the equation for velocity

displacement / time

what are the units for velocity

meters per second (m/s)

define momentum

the quantity of motion possessed by a moving body

what is the equation for momentum

mass x velocity

what are the units for momentum

kg m/s

define acceleration

rate of change of velocity

what is the equation for acceleration

final velocity-initial velocity/time

what are the units for acceleration

m/s^2

define deceleration

the rate of change in velocity which is negative

what is the equation for deceleration

final velocity-initial velocity/time

what are the units for deceleration

m/s^2

define force

A push or pull that alters the state of motion of a body

what is the equation for force

mass x acceleration

what is force measured in

Newtons