The root mean square speed of a gas molecule is greater than the average speed, because the former gives a greater weight to : a. lighter molecules.
b. heavier molecules.
c. higher speeds.

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

2) why do satelites not fall while revolving around the earth?