Lesson Three – Acceleration
Without acceleration nothing would ever happen….
Acceleration Acceleration is any change in an objects motion. Eg: Speeding up Slowing down Changing direction
Acceleration Acceleration is the change in an objects velocity divided by the time the change takes. Eg: I change speed from 10 m/sec to 20 m/sec in 5 seconds. 20-10 = 10 10 / 5 = 2 meters per second per second.
Acceleration Why did we write the acceleration as meters per second per second?
Animation http://phet.colorado.edu/en/simulation/moving-man
G Force The term “G-Force” is actually a way of measuring acceleration. 1 G is approximately equal to an acceleration of 10 meters per second per second. It is equal to the acceleration we experience when we fall freely on Earth.
Zero G Web Hunt Challenge : Can you find a good explanation for “Zero G” ? Why do people float in space?