A person of mass mp is standing at the right end of a cart of mass me and length s. The cart and the person are initially at rest. The person then walks to the left end and stops. You may assume that there is zero rolling resistance between the cart and the ground. (Part a) What is the speed of the cart when the person has finished walking? Express your answer only in terms of mp, me and s as needed. Uc,f= O (Part b) When the person is finished walking in what direction and how far has the cart moved? Express your answer only in terms of mp, me and s as needed. xef= (Part c) If the person takes a time interval At to go from rest to a speed u relative to the cart, what is the average force the person exerts on the cart during this time interval? Express your answer only in terms of mp, me, Deltat for At and u as needed. Fpc =
A person of mass mp is standing at the right end of a cart of mass me and length s. The cart and the person are initially at rest. The person then walks to the left end and stops. You may assume that there is zero rolling resistance between the cart and the ground. (Part a) What is the speed of the cart when the person has finished walking? Express your answer only in terms of mp, me and s as needed. Uc,f= O (Part b) When the person is finished walking in what direction and how far has the cart moved? Express your answer only in terms of mp, me and s as needed. xef= (Part c) If the person takes a time interval At to go from rest to a speed u relative to the cart, what is the average force the person exerts on the cart during this time interval? Express your answer only in terms of mp, me, Deltat for At and u as needed. Fpc =
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