A student performed a sphere drop experiment. The sphere was dropped from 1.50 m above the ground and the sphere has
a mass of 0.875 kg. Free fall times for the student's experiments are below.

a. Before the student calculates the acceleration due to gravity from the data, are there any trials that should be thrown
out? Justify your choice.

b. Calculate the average acceleration due to gravity from the student's data.
Free Fall Time (s)
0.553
0.700
0.557
0.552
0.555