Homework 2 - soto (rrs946) Homework 2 Spurlock (41003) This...

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soto (rrs946) – Homework 2 – Spurlock – (41003) 1 This print-out should have 63 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 oF 2) 10.0 points While John is traveling along a straight inter- state highway, he notices that the mile marker reads 240 km. John travels until he reaches the 143 km marker and then retraces his path to the 167 km marker. What is John’s resultant displacement From the 240 km marker? Answer in units oF km. 002 (part 2 oF 2) 10.0 points How Far has he traveled? Answer in units oF km. 003 10.0 points A polar bear starts at the North Pole. It travels 1 km South, then 1 km East, then 1 km North to return to its starting point. This trip takes 0 . 5 h. What was the bear’s average velocity? Answer in units oF km / h. 004 (part 1 oF 4) 10.0 points The position versus time For a certain object moving along the x -axis is shown. The ob- ject’s initial position is - 2 m. - 4 - 2 0 2 4 6 8 0 1 2 3 4 5 6 7 8 9 b b b b b b time (s) position (m) ±ind the instantaneous velocity at 1 s. Answer in units oF m / s. 005 (part 2 oF 4) 10.0 points ±ind the instantaneous velocity at 3 s. Answer in units oF m / s. 006 (part 3 oF 4) 10.0 points ±ind the instantaneous velocity at 5 s. Answer in units oF m / s. 007 (part 4 oF 4) 10.0 points ±ind the instantaneous velocity at 8 s. Answer in units oF m / s. 008 (part 1 oF 2) 10.0 points An electron in the cathode ray tube oF a tele- vision set enters a region where it accelerates uniFormly From a speed oF 30200 m / s to a speed oF 4 . 2 × 10 6 m / s in a distance oF 2 . 5 cm. What is its acceleration? Answer in units oF m / s 2 . 009 (part 2 oF 2) 10.0 points ±or what length oF time is the electron in this region where it accelerates? Answer in units oF s. 010 10.0 points A car enters the Freeway with a speed oF 5 . 6 m/s and accelerates uniFormly For 3.4 km in 3.3 min. How Fast is the car moving aFter this time? Answer in units oF m / s. 011 10.0 points An aircraFt has a liFt o² speed oF 140 km / h. What minimum uniForm acceleration does this require iF the aircraFt is to be airborne aFter a takeo² run oF 230 m? Answer in units oF m / s 2 . 012 10.0 points Two particles are at the same point at the same time, moving in the same direction. Par- ticle A has an initial velocity oF 7 . 9 m / s and an acceleration oF 3 . 3 m / s 2 . Particle B has an initial velocity oF 2 . 3 m / s and an acceleration oF 5 m / s 2 . At what time will B pass A? Answer in units oF s. 013 10.0 points An object is thrown downward with an initial
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soto (rrs946) – Homework 2 – Spurlock – (41003) 2 speed of 4 m / s from a height of 62 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 38 m / s . At what height above the ground will the
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This note was uploaded on 11/10/2011 for the course PHYSICS 303L taught by Professor Hoffman during the Fall '11 term at University of Texas at Austin.

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Homework 2 - soto (rrs946) Homework 2 Spurlock (41003) This...

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