The distance versus time graph for Object A and Object B are shown. (3 points) Which object moves with changing speed?

Only Object B, because the graph has straight lines
Only Object A, because the graph starts from the origin
Both Object A and Object B, because the slope of the graph is the same throughout
Both Object A and Object B, because different distances are traveled in the same time interval

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.