Q1. A 0.070 kg arrow hits a target at 21.10 m/s and penetrates 4.90 cm before stopping. What average force did the target exert on the arrow?
Q2. A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string?
Q3. A sealed bottle has water in it, and two tubes enter the bottle through the seal. Tube B is attached to a pump at one end, and the other end is above the water surface. If tube A is immersed 0.13 m below water surface and the other end is open to the air. What is the minimum pressure obtained inside the bottle? What will happen when this pressure is reached?