Create a class called Particle to represent different kinds of particles in an N$-$

body simulation. This class should have the following data:

$x,y,z,vx,vy,vz-3D$ position and velocity values

ax$,$ ay$,$ az $-3$D acceleration values

$*m-$ mass

It should have the following methods:

init$\_$: initialize a Particle with $m,x,y,z,vx,vy,vz$ passed in

move: $-$ move the particle over a timestep dt using

$x=x+v{x}^{***}dt+{0\mathrm{.}5}^{**}a{x}^{**}{d}^{*****}2$ etc.

compute$\_$accels: compute total gravitational acceleration on the particle

due to a list of particles

Create a subclass, StarParticle. StarParticle should have in addition to the

base class:

t $-$ age

age$\_$stars: a method that increments the particle's age by $dt$

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