Question

Upon eating a 350 cal donut, a physics professor is overcome by guilt and decides to go for a walk that will compensate for the energy acquired through the donut. the mass of the professor is 75kg, the coefficient of friction between shows and floor is uk= 0.25, and he walks at a constant speed along a horizontal path. how far must he walk to have expended the energy intake from the donut?

a) 5.0 km

b) 8.6 km

c) 12 km

d) none of the above

Answer 1