I need help on solving the % difference for the steel sphere and acrylic sphere and answering the question below. I have collected the dataand now need to solve step E and answer the question below.

Steel Sphere	Acrylic Sphere
A	Length of Track (cm) (s) (Step 1, use 80 cm)	80 cm	80 cm
B	Angle of Elevation (q) in Degrees ⁰ (Step 1)	6°	6°
C	Calculated Time from s=0 to s=80 (formula from step 2)	1.52	1.52
D	Measured Time from s=0 to s=80 (step 3 with stopwatch)	1.42	1.48
E	% Difference (step 4)

** Question for Activity 4: What effect does the type of the sphere have on the time of the object to travel the measured distance, explain?