Ahigh speed moving train has a momentum of 10,000,000 kilograms–meters per second. it later slows down to one half of its original velocity. what is its new momentum?

The slope of a velocity time graph over any interval of time gives the during that interval

Who was the first scientist to measure speed as distance over time?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?