9. An 80g stone is released at the top of a vertical cliff. After falling for 3s, it reaches the floor of the cliff and penetrates 9cm into the ground. Determine
the height of the cliff
the average force resisting penetration of the ground by the stone.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

i think its d if wrong im sorry

conduct current i mean it makes sense

use photo math tells u all the answers thats what i use