1. (Target C1) A bicycle wheel (approximately a hoop) is released from rest at the top of a ramp. It rolls down, then up a second one. The first ramp is 100m long and makes a 30 angle with the ground. The second ramp is 25m long and makes a 45 angle with the ground. What is the speed of the wheel when it reaches the end of the second ramp? 2. You and a friend throw bouncy balls towards one another. You have remarkably good aim and the two balls collide in midair! The ball traveling to the right has a mass of 50g and speed of 3m/s. The ball traveling to the left has a mass of 150g and speed of 1.75 m/s. After colliding, the more massive ball is traveling to the right at 0.63 m/s. (a) (Target C2) What is the velocity of the less-massive ball after the collision? (b) (Target C4) Was this collision inelastic, or was it elastic? Explain your reasoning. 3. (Target C3) A 26000 kg spaceship is traveling at 5 x 10" m/s. A 20 000 kg spaceship is traveling at 7 x 10' m/s in a direction 30 to the first ship's path. The second ship comes up from behind and below the first ship, and the two ships collide. If they remain stuck together after the collision, what is their velocity? 4. (Target C5) A 500g box is placed at the bottom of a 1.75m tall ramp. A 750g box is released from rest at the top of the ramp. The two boxes are equipped with velcro and remain stuck together after colliding. What is their speed after they collide