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A roller-coaster has a mass of 400 kg when fully loaded with passengers.  At the bottom of a circular dip of radius 60m (as shown in the figure) the car has a speed of 14 m/s.  What is the magnitude of the force of the track on the car at the bottom of the dip?

 Three masses are located in the xy plane as shown.  What is the magnitude of the resultant force (caused by the other two masses) on the mass at the origin, x = 0, y = 0? (select closest answer)

 (Extra Credit  worth 5 points):  All of the above objects have the same mass M, and the same radial distance R from the axis of rotation as shown.  Which two objects have the same moment of inertia about the central axis? (Select a correct answer and show work to prove why!)

TRUE or FALSE? Impaired hemostasis (blood clotting) is an example of dysregulation of external cell maintenance.

Four masses are placed at the vertices of a rectangle (4 m x 5 m) and held in those positions by four “light” (massless) rods which form the sides of the rectangle.  What is the moment of inertia of this rigid body about an axis (in red as shown) that passes through the rectangle at x = 3m? (Select closest answer)

An airplane flies horizontally with a speed of 500 m/s at an altitude of 350 m.  Assume that the ground is level and there is no air friction.  At what horizontal distance from a target must the pilot release a bomb so as to hit the target?

 A driver in a car traveling at a speed of 40 mph sees a groundhog 25 m away on the road. If the acceleration is constant, how much time elapses if the car just barely stops before hitting the cute rodent.   (Note: 1 mph = 0.447 m/s)

Which two of the following statements is TRUE/CORRECT with respect to the treatment/prevention of intoxications involving the VTTT shown above?

 Which of the following countries will exhibit the smallest difference when calculating the centroid using longitude/latitude as the CRS, compared to meters as the CRS?

 Which of the following is the most common site in the nephron for toxicant-induced renal injury?