flag length meter / meters second^2 0.049 9.804 height at height at timer at velocity at gravitational first second first |first kinetic energy at potential energy photogate photogate mass photogate photogate first photogate at first photogate V1 = (flag length) K1= formula h1 h2 M t1 / t1 (1/2) *mass*v1^2 U1=mass*g*h1 meters / Junits meters meters kilograms seconds seconds Joules Joules 0.103 0.078 0.289 0.0953 0.103 0.078 0.309 0.0962 trial 1 0.103 0.078 0.339 0.0968 0.116 0.083 0.289 0.0875 0.116 0.083 0.309 0.0844 trial 2 0.116 0.083 0.339 0.0799 Note that excel's trig functions use radians by default. The formula for th the acceleration from g, mi position of position of first second distance between height difference photogate photogate photogates of photogates formula X2 x2-x1 h2-h1 units meters meters meters meters trial 1 .35 1.19 0.35 1.19 0.35 1.19 trial 2 0.4 1.19 0.4 1.19 0.4 1.19