Newton and Momentum Flashcards
Newton’s second law of motion
the force acting on a body that has a constant mass, is proportional to its acceleration - F = ma
units of a newton
kgms^-2
what is inertia
mass causing resistance to change in velocity
equation for inertia
a = F/m
what affect is constant force on a particle
is has constant acceleration and a changing speed
example of a constant force on a particle
free fall
affect of the second law on the first law of motion
when there is a constant speed and a force acting on the particle there must be another force there to balance it out
what causes a particle to act in a curve
it has acceleration and therefore another force acting on it
what causes a ball to curve down after it is thrown horizantaly
gravity gives it downwards acceleration
moving with increasing speed downwards
equation for momentum
p = mv
what is the application of momentum to chemistry
to predict the interactions of particles in the absence of external forces
to predict the trajectories of bodies under variable conditions
what is needed to preserve momentum before and after impact
closed system
if two particles in closed system of speed 1 and mass 1 collide and bond what is the speed after
0.5 because double mass and same momentum
