How fast would a 2000kg car need to be traveling to have the same momentum has a 3000kg truck driving at 18m/s?

Does heating a metal wire increase or decrease its electrical resistance? why?

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)

Which statements did both aristotle and ptolemy assume? check all that apply.