b. Walking Trial Weight (N) Height of Time (s) Work done Power (Watts) stairs (m ) (N . m ) 686.7N 1.5m 7.18s 1030.05N .m 143.46watts N 686.7N 1.5m 7.90s 1030.05N .m 130.37watts 3 686.7N 1.5m 6.92s 1030.05N .m 148.85watts V. Computation Compute the work done for running and walking using the formula W = * -, where F is the force applied , in this case , it is the weight and s is the displacement or the height of the stairs . Running Walking W ?igh ? = mg W?igh ? = mg W?igh? = (70kg)(9.81m/? 2 ) W?igh? = (70kg)(9.81m/? 2 ) W ?igh ? = 686.7N W ?igh ? = 686.7N W =-= W = = = (???. ? N) (?. ?m) (???. ? N) (?. ? m) W = ??3?. ??N . m or J W = ??3?. ??N . mor J Solve for the power expanded for running and walking by using formula : W P Running Walking 1030.05N 1030.05 N P = P = 3.06 ? 7.18? P = 336.62 wa ??? P = 143.46 wa ??? 1030.5N 1030.05N P = P = 2.887 7.90? P = 357.66 wa ??? P = 130.37 wa ??? 1030.05N 1030.05 N P P = 2.94 ? 6.92? P = 350.36 wa ??? P = 148.85 wa