An object traveling along the x-axis at constant acceleration has a velocity of +10m/s when it is at x=6.0 m
and of +15m/s when it is at x=10.0m. what is its acceleration?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

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