A 2 kg stone thrown vertically from the top reached a height of 3 m and fell at the point of shooting. What is the potential energy of the stone at the start of the movement towards the starting location and at the highest point of the shot?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.