High school class is discussing whether a particular discovery in chemistry has had a positive impact on society.
which question is the most important for the students to answer?
how have people and the environment been affected by the discovery?
how many scientists were involved in the discovery?
when was the discovery made?
at which institution was the discovery made?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it