# https://en.wikipedia.org/wiki/Projectile_motion

fn max_height(v: Velocity, θ: Angle) -> Length = v² · sin(θ)^2 / (2 · g0)
fn max_distance(v: Velocity, θ: Angle) -> Length = v² · sin(2 θ) / g0
fn time_of_flight(v: Velocity, θ: Angle) -> Time = 2 v · sin(θ) / g0

assert_eq(max_height(10 m/s, 45 deg),      2.55 m,  1 cm)
assert_eq(max_distance(10 m/s, 45 deg),   10.20 m,  1 cm)
assert_eq(time_of_flight(10 m/s, 45 deg),  1.44 s, 10 ms)