1. Explain what happens to your mass and your weight as you are taken up in a balloon. 2. The mass of the physics textbook is closest to: 10 3 kg, 10 2kg, 10-1kg, 100 kg, 10' kg, 102 kg, 105 kg. 3. 1 N is the approximate weight of which of the following: Mr. Omoloju, a desk, a crazy cat, an apple, a paper clip, a weird doggie. 4. A spring has a spring constant of 25 N/m. How much force is required to stretch the spring 0.25 m from its equilibrium position? 5. A vertical spring 0.100 meter long is elongated to a length of 0.119 meter when a 7.00 N weight is attached to the bottom of the spring. What is the spring constant of the spring? 6. The graph the elongation of a spring as a function of the applied force. What is the spring constant for this spring? 24 18 Force (N) 12 6.0- 0 0.10 0.20 0.30 0.40