Could you explain this and show me how, I don't understand it.

W - F. d B4-RT06: CARS CHANGING VELOCITY-WORK DONE The situations below show before and after "snapshots" of a car's velocity. All cars have the same mass. A B Before After Before After +10 m/s +20 m/s +10 m/s 0 C (40)2 Before After Before After 800 2/ ( 20 ) = 200 +10 m/s -10 nv/'s +20 m/s +20 m/s Rank the work done on the cars to create these changes in velocity for the same distance traveled. OR 2 All All Cannot Greatest Least the same zero determine Explain your reasoning. This is because WEFed and while we know the force, we don't know the distance. B4-SCT20: BLOCKS SLIDING DOWN FRICTIONLESS RAMPS-WORK BY THE EARTH Two identical blocks are released from