Analyzing Position versus Time Graphs: Conceptual Question| University Physics

Two cars travel on the parallel lanes of a two-lane road. The cars’ motions are represented by the position versus time graph shown in the figure. Answer the questions using the times from the graph indicated by letters.

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Position versus Time Graphs Conceptual Question| University Physics

The motions described in each of the questions take place at an intersection on a two-lane road with a stop sign in each direction. For each motion, select the correct position versus time graph. For all of the motions, the stop sign is at the position x=0, and east is the positive x-direction.

Arizona State University| PHY 121: Univ Physics I: Mechanics|Homework 1-1| Using Significant Figures

Your bedroom has a rectangular shape, and you want to measure its area. You use a tape that is precise to 0.001 m and find that the shortest wall in the room is 3.547 m long. The tape, however, is too short to measure the length of the second wall, so you use a second tape, which is longer but only precise to 0.01 m. You measure the second wall to be 4.79 m long. Which of the following numbers is the most precise estimate that you can obtain from your measurements for the area of your bedroom?

Arizona State University| PHY 121: Univ Physics I: Mechanics|Homework 1-1| General Problem Solving Strategy

Two hockey pucks, labeled A and B, are initially at rest on a smooth ice surface and are separated by a distance of 18.0 m. Simultaneously, each puck is given a quick push, and they begin to slide directly toward each other. Puck A moves with a speed of 2.90 m/s, and puck B moves with a speed of 3.90 m/s.

Arizona State University| PHY 121: Univ Physics I: Mechanics|Homework 1-1| Motion of Two Rockets

Two toy rockets are traveling in the same direction (taken to be the x-axis). A diagram is shown of a time-exposure image where a stroboscope has illuminated the rockets at the uniform time intervals indicated.