Which of the following are ways in which energy can be transferred to or from a substance? a.) heat and internal energy
b.) work and internal energy
c.) heat and work
d.) heat and kinetic energy

good for her? ? where is the question?

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.