A cart of mass 0.85 kg is on a track, connected by a string over a pulley to a hanging mass of 0.1 kg. A friction pad is attached to the bottom of the cart, and you push the cart so that it first moves toward the sensor, then away from the motion sensor. The net acceleration of the cart does which of the following? a. always points away feom the motion sensor b. always points toward the motion sensor c. the direction of the net acceleration cannot be determined

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