Key Terms
- banked curve
- curve in a road that is sloping in a manner that helps a vehicle negotiate the curve
- centripetal force
- any net force causing uniform circular motion
- Coriolis force
- inertial force causing the apparent deflection of moving objects when viewed in a rotating frame of reference
- drag force
- force that always opposes the motion of an object in a fluid; unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid
- friction
- force that opposes relative motion or attempts at motion between systems in contact
- ideal banking
- sloping of a curve in a road, where the angle of the slope allows the vehicle to negotiate the curve at a certain speed without the aid of friction between the tires and the road; the net external force on the vehicle equals the horizontal centripetal force in the absence of friction
- inertial force
- force that has no physical origin
- kinetic friction
- force that opposes the motion of two systems that are in contact and moving relative to each other
- noninertial frame of reference
- accelerated frame of reference
- static friction
- force that opposes the motion of two systems that are in contact and are not moving relative to each other
- terminal velocity
- constant velocity achieved by a falling object, which occurs when the weight of the object is balanced by the upward drag force