hooplikenari
04.02.2020 •
Physics
Atrain of mass 1.2 x 10 kg, starts from rest and gets to a maximum speed of 20 mi/h in 6.0 minutes, having a constant acceleration during that time. ignoring the air dr orce and friction, and assuming that throughout the motion it stays at the same altitude, what is the required power of its engine? 30 mw 6.0 mw 15 mw 30 mw
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When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall. (i) Name the force exerted ...