1、.Constant Velocity and Uniform Acceleration1. Bill is on the roof of the Circle K, and drops a stone 5.0 m above the surface of the parking lot. Ted is in the parking lot, and throws a stone upward at 8.0 m/s, releasing it 2.0 m above the surface of the parking lot. Write position vs time equations

2、of motion for each stone, after the stones are released.2. Sketch qualitative position versus time, velocity versus time, and acceleration versus time graphs for the motion of the two stones in the previous problem.3. A child rides a bicycle back and forth in front of her house. She pedals 10 meters

3、 to the east in 10 seconds, turns the bicycle around in 5 seconds, and then pedals 12 meters to the west in 15 seconds. Draw position versus time and velocity versus time graphs of her east-west motion. 2006B2 (15 points)A world-class runner can complete a 100 m dash in about 10 s. Past studies have

4、 shown that runners in such a race accelerate uniformly for a time tu and then run at constant speed for the remainder of the race. A world-class runner is visiting your physics class. You are to develop a procedure that will allow you to determine the uniform acceleration au and an approximate valu

5、e of tu for the runner in a 100 m dash. By necessity your experiment will be done on a straight track and include your whole class of eleven students.(a)By checking the line next to each appropriate item in the list below, select the equipment, other than the runner and the track, that your class wi

6、ll need to do the experiment._ Stopwatches_Tape measures_Rulers_Masking tape_Metersticks _Starters pistol_String_Chalk(b)Outline the procedure that you would use to determine au and tu , including a labeled diagram of the experimental setup. Use symbols to identify carefully what measurements you would make and include in your procedure how you would use each piece of the equipment you checked in part (a).(c)Outline the process of data analysis, including how you will identify the portion of the race that has uniform accelerati