// Projectile motion

f(t,a,v) = ( v*cos(a)*t, v*sin(a)*t - 9.8*t^2/2 )

p2(t) = f(t, 2*pi/16, 50); plot( p2, 0,10,100 )

p3(t) = f(t, 3*pi/16, 50); plot( p3, 0,10,100 )

p4(t) = f(t, 4*pi/16, 50); plot( p4, 0,10,100, "red" )

p5(t) = f(t, 5*pi/16, 50); plot( p5, 0,10,100 )

p6(t) = f(t, 6*pi/16, 50); plot( p6, 0,10,100 )