Part B please !

(20%) Problem 4: A man whose mass is 78 kg runs up a flight of stairs and has a vertical gain of 16.3 m in a time of 10.9 s. Ellison, Jackson Reese - jre0029@auburn.edu @theexpertta.com - tracking id: 2A76-2E-0E-4C-A188-13325. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. 50% Part (a) What power, in watts, is supplied by the force pushing up on the man? (Ignore gains or losses in kinetic energy.) P = 1143.09 P = 1143 Correct! *50% Part (b) Suppose the man's body is 41.2% efficient, so that just 41.2% of the energy supplied by his body is converted into mechanical power. How much total power is expended by his body, in watts? P = W Grade Summary Deductions 0% Potential 100% sin cos( tan() 7 8 9 HOME Submissions cotan( asin acos 4 5 6 Attempts remaining: 17 0% per attempt) atan() acotan( sinhC 2 3 detailed view cosho tanh() cotanh() + END 1 0% 0% O Degrees O Radians VO BACKSPACE DEL CLEAR W N 0% Submit Hint Feedback I give up