A1-kilogram ball has 8 joules of kinetic energy. what is its speed?

We know, K.E. = 1/2 mv²

8 = 1/2 * 1*v²

16 = v²

v = √16 = 4

So, velocity of the ball is 4 m/s

wavelength divides in half and speed stays the same.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.