James asks…More work questions!!!! Help?1. A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.7 cm to x = 5.7 cm, where x is the displacement from its unstretched length.
2. If the speed of a car is increased by 40%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time.
3. A 1200 kg car rolling on a horizontal surface has speed v = 55 km/h when it strikes a horizontal coiled
