An airplane flies with a velocity of 55.0 m/s [35o n of w] with respect to the air (this is known as air speed). if the velocity of the airplane according to an observer on the ground is 40.0 m/s [53o n of w], what was the wind velocity?

Aballet student who learns with the of his instructor is demonstrating learning.

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

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?