Your friend just challenged you to a race. you know in order to beat him, you must run 50 meters within 60 seconds in an eastern direction. what does your average velocity need to be to win the race? .5 meters per second, east .83 meters per second, east 1.2 meters per second, east 3000 meters per second, east

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

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

An object with a mass of 1.5 kg changes its velocity from + 15 m/s to +22 m/s during a time interval of 3.5 seconds. what impulse was delivered to the objects?