Motion Diagrams and ID kinematics Motion Diagrams 1. For the following two position vs time graphs, write whether displa

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Motion Diagrams and ID kinematics Motion Diagrams 1. For the following two position vs time graphs, write whether displacement is positive or negative, velocity is positive or negative, and acceleration is positive or negative. t 2. For the following two velocity vs. time graphs, identify whether the object has a positive or negative displacement, velocity, and acceleration t 1

-t 4. Draw a position vs. time, velocity vs. time, and acceleration vs. time graph for an object that is moving in the positive direction with a constant, positive acceleration 2

5. Draw a position vs. time, velocity vs time, and acceleration vs. time graph for an object that starts from rest and is speeding up in the negative direction. a 6. Draw a position vs. time, velocity vs. time, and acceleration vs. time graph for an object that is moving in the positive direction with a constant, negative acceleration 3

ID Kinematics 1. You leave the dining hall for physics class at 7:45 am. You make it to Krumm (380 meters away) by 7:48 am when you realize you forgot a pencil. You run back to the bookstore (460 meters away) to get a pencil at 7:52 am. You now head to class, fully prepared, and sit in your chair (910 meters away) al 7:58 am Define the positive direction as toward the west (from the dining hall to class) and remember that displacement and velocity are vectors (direction matters!) What is your velocity between the dining hall and Krumm? b. What is your velocity between Krumm and the bookstore? c. What is your velocity between the bookstore and class? d. What is your average velocity for the whole trip? 2. While driving on the highway, you see a cop in the distance. You slow down from 78 mph to 65 mph in 5 seconds. a. What is your acceleration in b. What distance do you cover as you slow down?

3. On my way home one night, I am driving at a speed of 19,0 . Asl approach a stoplight, I see it turn yellow and speed up to make it through. I cover the next 36 meters in 1.65 seconds. Assume the acceleration during this 1.65 s is constant What is my acceleration while I speed up? b. What is my final speed? 4. You and your roommate are doing physics problems while in your bunk beds. You make a mistake and ask your roommate to foss up an craser. You are 1.40 m above your friend 1. What speed must your roommate throw the eraser at in order for it to just barcly reach you? (Remember that vclocity is equal to zero at the highest point) b: How long does it take the craser to travel from your friend's hand to your hand? c. You like to snack while you study. So your fingers are covered in Cheeto duast. Your gross fingers cause you to drop the eraser from your top bunk, a height 2.50 m above the floor. How fast is the eraser moving just before it hits the floor? Assume it is not moving before you drop it (an initial velocity of zero)