A cart rolls with low friction on a track. A fan is mounted on the cart, and whe

Question

A cart rolls with low friction on a track. A fan is mounted on the cart, and when the fan is turned on, there is a constant force acting on the cart. Three different experiments are performed: Fan off: The cart is originally at rest. You give it a brief push, and it coasts a long distance along the track in the +x direction, slowly coming to a stop. Fan forward: The fan is turned on, and you hold the cart stationary. You then take your hand away, and the cart moves forward, in the +x direction. After traveling a long distance along the track, you quickly stop and hold the cart. Fan backward: The fan is turned on facing the "wrong" way, and you hold the cart stationary. You give it a brief push, and the cart moves forward, in the +x direction, slowing down and then turning around, returning to the starting position, where you quickly stop and hold the cart. The figure displays graphs of Fnet.x, the x component of the net force acting on the cart, vs. time. The graphs start when the cart is at rest, and end when the experiment with the correct graph.

Explanation / Answer

a)2 b)4 c)1 hope my answer is correct and please appreciate me by awarding me karma points

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