public void ImpactForceInNewtons_ReturnsCorrectValue()
{
// prereq
Approx_Works();
// arrange
float mass = 10; // kg
float speed = 50; // m/s
float lossRatio = 0.5f; // 50% speed energy loss
float deltaTime = 1f / 60;
// act
float force = PMath.ImpactForceInNewtons(mass, speed, lossRatio, deltaTime);
float expected = mass * speed * lossRatio / deltaTime;
// assert
Assert.IsTrue(PMath.Approx(expected, force), TestHelper.ShowVariables(expected, force));
}