BREAKING NEWS FROM IRONDEQUOIT HIGH SCHOOL
This week, young physicists have been calculating acceleration due to gravity for their kinematics and gravity lab project. First, they were given the task to collect all of their materials, including:
-Gator skin ball
-Meter sticks
- A Stop Watch
They would measure the distance of how high the ball was off the ground, using the meter stick from the ground to the bottom of the ball that is touching the ceiling, a student holding it while standing on a desk. The person standing on the desk will then drop the ball, recording the time between when the ball was dropped until it touched the ground. They repeated the process three times, then took the average of the data times collected. The young physicists knew at first that initial velocity would have been 0 m/s, their measured distance being 240.5 cm at first, and then converted into 2.4m. The average time was .61 seconds for the young physicists, this information being enough in order to use an equation to find the acceleration due to gravity.
What the young physicists did was use the equation:
Vf=Vi+at^2
Afterwards, in order to find acceleration, the equation would have to be re-arranged in order to get an equation of A=2d/t^2
The young physicists would later on substitute their information into the variables, A=292.4m)/(.61s)^2 in order to get 12.9m/s^2.
In the end they found their percentage error by subtracting the calculated from the accepted value and dividing by the accepted value. After that, it would be multiplied by 100.
(9.81m/s^2)-(12.8m/s^2)/(9.81m/s^2) X 100 = 31.5% error