If the mass of the pendulum bob is doubled, predict the change in kinetic energy. A)
It remains constant.
B)
It is double the orginal KE.
It is one-half the original KE.
D)
It is four times the orginal KE.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

Blank liquids and gases exert a buoyant force on objects placed in them