Phương trình trạng thái tổng quát của khí lí tưởng diễn tả là​

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.