Answer the following questions as clearly as you can. 1. What is wrong with the following statement: "I observed the car's speed to be 10 m/s." 2. Why can't a vector's magnitude be negative? 3. Convert 37 picoseconds to milliseconds.

A stone is tossed straight upwards. Consider the following 3 question: 4. For which part of the stone's path are its velocity and acceleration parallel and why? 5. For which part of the stone's path are its displacement and change-in-velocity anti-parallel and why? 6. What is the stone's velocity and acceleration at the highest point?