1. A 750 kg car is on a 20-degree banked curve with a radius of 30 meters. (a) What are the horizontal and vertical components of normal force? (b) How fast must the car be traveling to maintain uniform circular motion?

2. Planet A (5.5 x10^24 kg) and Planet B (6.8 x 10^20 kg) are 10^10 meters apart. a) What is the gravitational force between the two planets? (b) what would happen to the force if you doubled each mass? (c) what would happen to the force if you tripled the distance