A shopper in a supermarket pushes a cart with a force of33 N directed at an angle of 25°below the horizontal. The force is just sufficient to overcomevarious frictional forces, so the cart moves at constant speed.
(a) Find the work done by the shopper as shemoves down a 54 m length aisle.



(c) The shopper goes down the next aisle, pushing horizontally andmaintaining the same speed as before. If the work done byfrictional forces doesn't change, would the shopper's applied forcebe larger, smaller, or the same? What about the work done on thecart by the shopper?