Table 16.2 (after Problem 7) lists the work W associated with several human activities....

Table 16.2 (after Problem 7) lists the work W associated with several human activities. For walking, the table lists W/t = 50 W, where t is the time spent walking. Use Newton’s laws of motion to estimate the value of W/t for a typical person walking. Hint: Consider the work done in lifting the body during each footstep and assume that potential energy is not “returned” when a foot comes back down to the ground.