Question: In a roller coaster ride, a cart goes down a perfectly smooth circular track. At the bottom of the track (point B) the apparent

In a roller coaster ride, a cart goes down a perfectly smooth

In a roller coaster ride, a cart goes down a perfectly smooth circular track. At the bottom of the track (point B) the apparent weight of the cart is 3 times the actual weight of the cart. The cart then moves horizontally over a smooth (frictionless) surface in which it encounters air resistance F.= - kmv. What is the velocity of the cart as a function of time? R. B.

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