code: @Pure
  	@Inline(value = "PhysicsUtil.getPhysicsEngine().motionNewtonLaw(($1), ($2), ($3))",
  			imported = {PhysicsUtil.class})
  	public static double motionNewtonLaw(
  			double speed,
  			double acceleration,
  			double dt) {
  		return engine.motionNewtonLaw(speed, acceleration, dt);
  	}
docs: Compute and replies a motion according
  to high school physics Newton's equations for motion.
  
  <p><code>movement = speed * dt + 0.5 * acceleration * dt * dt</code>
  
  @param speed is the current speed of the object.
  @param acceleration is the current acceleration of the object.
  @param dt is the time
  @return a motion