A jet plane makes a downward dive as shown. The bottom part of the path is a quarter circle having a radius of curvature of 350 m. At what speed (in mph) will the pilot experience an acceleration of 5.5g? Use 1 mph = 0.447 m/s. A. 125 mph
B. 620 mph
C. 1040 mph
D. 310 mph

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?