Alex and John are loading identical cabinets onto a truck. Alex lifts his cabinet straight up from theground to the bed of the truck, whereas John slides his cabinet up a rough ramp to the truck. Which statement is correct about the work done on the cabinet– Earth system?
A、Alex and John do the same amount of work.;
B、Alex does more work than John. ;
C、 John does more work than Alex. ;
D、None of those statements is necessarily true because the angle of the incline is unknown.
发布时间：2025-09-02 09:04:46
