Arizona State University| PHY 121: Univ Physics I: Mechanics|Homework 1-2| Given Positions, Find Velocity and Acceleration

The table shows the x coordinate of a moving object. The position is tabulated at 1-s intervals. The x coordinate is indicated below each time. You should make the simplification that the acceleration of the object is bounded and contains no spikes.

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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.