2. The value of two particular displacement vectors does not equal the sum of the
magnitude of the individual vectors. Which of the following is true?
A The vectors could be in the same direction or in opposite directions.
B The vectors could be in opposite directions or at an angle to each
other.
C The vectors can only be the same angle.

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass