More Acceleration!

Today we learned even more about acceleration, but more specifically about gravity and how it effects objects. We learned that gravity is always acting upon objects no matter which direction an object is moving. Gravity is always pulling objects towards the Earth. We did an experiment in which we recorded a volleyball rolling down an incline, and observed the changes of position, velocity, and acceleration. We were also shown Galileo's theory of universal gravity, which states that all objects no matter the mass, shape, size, ect.., will fall at the same speed. Mr. Blake demonstrated this by dropping a volleyball and a tennis ball at the same time and they both hit the ground at the same time. I didn't believe it until I actually saw it!

http://er.jsc.nasa.gov/seh/towergal.gif

This is a picture of Galileo's experiment that we saw in class today where two completely different objects were dropped from the same height and they hit the ground at the exact same time.