B. Determination of u (accelerated motion) Table 6.3: Wood on Aluminum m = 13.21g M = 40g m E 26.42g a m (flat) 0.288 0.27 % diff m (edge) 0.311 0.29 7.70 m +m W 0.431 0.29 1.50 Table 6.4: Felt on Aluminum m b 13.21g m = 40g m= W 25.42g a 1 (flat) 0.0644 0.29 % diff m (edge) 0.138 0.30 1.90 m + m 0.128 0.30 3.40