1. What force keeps a satellite executing uniform circular motion around the Earth? a) gravity b) static friction c) normal d) tension 2. If a student walks 15 meters East and then he walks 15 meters North and his total trip takes 10 seconds, what is his average velocity? a) 0 m/s b) 2.12 m/s NE c) 3.00 m/s NE d) 21.2 m/s NE

3. A new car has a 0.040 m^3 volume gas tank. It also gets 20 km/L gas mileage. How far can the car go on a tank of gas? a) 8.0 km b) 20 km c) 800 km d) 2000 km