A shopper pushes a grocely cart 20.0 m at a constant velocity on level ground, against a 35.0 N frictional force. He pushes in a direction 250 below the horizontal. a. The work done on the car: byfriction is Blank 1. b. The work done on the car: by the gravitational force is Blank 2. c. The work done on the car: by the shopper is Blank 3. d. The force the shopper exerts is Blank 4. e. The total work done on the cart is Blank 5. Round your answer to 0 decimal place. Blank 1 Add your answer Blank 2 Add your answer Blank 4 Add your answer Blank 5 Add your answer Blank 3 Add your answer l