A roller-coaster vehicle has a mass of 505 kg when fully loaded with passengers (see figure).   (a) If the vehicle has a speed of 17.0 m/s at point A, what is the force of the track on the vehicle at this point?  N (b) What is the maximum speed the vehicle can have at point B in order for gravity to hold it on the track?  m/s

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.