A bird flies off of a cliff, dropping a feather and knocking ocks off the cliff. The rocks reach the ground much
aster than the feather.
Which energy transformations occur in this case?
Check all that apply.

All of the rocks' potential energy is converted into
kinetic energy because rocks do not experience wind
resistance.

Some of the potential energy of the feather is
converted into kinetic energy.

All of the feathef's potential energy is converted into
thermal energy due to the friction of air resistance.

Some of the rocks' potential energy is converted into
thermal energy due to the friction of air resistance.

Some of the feather's potential energy is converted
into thermal energy due to the friction of air resistance.

One answer could be erosion

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3