a net horizontal force of 5000N is applied to a stalled car whose mass is 1500kg. what will be the car's speed after 10s?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

The heliocentric and the geocentric models of the solar system included these central principles

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.