Avase with a mass of 0.800 kilograms falls from a height of 0.750 meters to a position of 0.500 meters above the floor. ignoring frictional effects, the total mechanical energy at the 0.500 position is

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

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