If a ball has 100 J of potential energy on the shelf, how much energy does it have if it falls one-fourth of the way down to the ground?
(When answering, can you just type in the answer instead of putting a photo, because I haven’t been able to open any of the photos) Thanks!

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

An uplifted block of rock between two normal faults