1125-kg car and a 2250–kg pickup truck approach a curve on the expressway that has a radius of 225 m. At what angle (ROUNDED-OFF TO WHOLE NUMBERS) should the highway engineer bank this curve so that vehicles traveling at 65.0 miles per hour can safely round it regardless of the condition of their tires? (1.609 km = 1 mile)

Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower. At top speed, the planes fly at a 56-degree bank approximately 46 m from the tower. In this position, the support chains make an angle of 56 degrees with the vertical. Calculate the speed of the planes.

A vehicle with a mass of 2.1×10³ kg is driving at a speed of 61 km/h around a level roadway with a curvature radius of 61 meters, just staying on the roadway (i.e., driving at the maximum safe speed for this turn and the tire treads). What is the coefficient of friction between the tires and the road? (Hint: Watch your units above.) Answer: μ = (no units)

The Texas Motor Speedway is an oval racing track with curves of radius 229 m that are banked at an angle of 24.0°. The size of the track allows for race cars to achieve speeds in excess of 400 km/h. An unintended consequence of the banked curves and high speeds is that race car drivers experience excessive G forces, especially in the "vertical" direction (with respect to their body position), causing dizziness and loss of consciousness. (a) A daring driver, pushing his car to the limit, experiences 4.67g of centripetal acceleration during one banking maneuver. What is the speed of his car during the maneuver? (Give your answer in km/h.) km/h (b) If the driver is seated so that during the banking maneuver his upper body is aligned with the direction normal to the banked curve, what is the magnitude of the component of the centripetal acceleration along the driver's upper body? (Give your answer in terms of g.) a delete