2.) A girl is running her toy trains on a level track. The train is made up of 5 cars and the locomotive. The locomotive (the engine that pulls) has a mass of 1.9 kg. Each car after the locomotive has a mass of 0.90 kg. Each car individually has a frictional drag of 2 N. Assume no frictional drag forces act on the locomotive. A.) Calculate the force acting on the locomotive that pushed the whole train (locomotive and all the cars) moving forward causing an acceleration of 0.25 m/s B.) What object is pushing the locomotive forward? C.) Calculate the force in hitch 2 and hitch 4 under the same conditions as reported above.

The simple interest on a loan of $200 at 10 percent interest per year is $10 per year until the loan is paid off. $15 per year until the loan is paid off. $20 per year until the loan is paid off. $25 per year until the loan is paid off.

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)