Choose an object to observe. list some observations. then ask some questions related to your observations

Object: Clouds

Observation: The clouds are white, fluffy looking, and moving a little fast. Some are more see through than others and not as fluffy looking. They make different shapes and hide the sun very well. Some are very white and others are darker than others.

Questions: why are there so many clouds one day but none the next day? Why does it rain if the sky is sunny and the clouds are not grey and dark? Why isnt the sun stronger than the clouds?  

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.