When the forces applied to a body are balanced, the body is said to be in

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

see earlier

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.