course PHY 121 A ball falls freely from rest at a height of 2 meters. Observations indicate that the ball reaches the ground in .64 seconds. •Based on this information what is its acceleration? 2m / .64s = 3.1m/s ####This should be 3.1m/s * 2 = 6.2m/s ####6.2m/s / 0.64s = 9.7m/s^2 answer/question/discussion: • Is this consistent with an observation which concludes that a ball dropped from a height of 5 meters reaches the ground in 1.05 seconds? No because 5m / 1.05s = 4.8m/s ####This is 2 * 4.8m/s = 9.6m/s ###9.6m/s / 1.05s = 9.1m/s^2 answer/question/discussion: • Are these observations consistent with the accepted value of the acceleration of gravity, which is 9.8 m / s^2? no "