On earth a rock is dropped and falls 4.9 meters just before it hits the ground. how much time did the rock take to fall this distance

Which two objects have the greatest gravitational force acting between them

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius