Answered: A car traveled at 380 minutes, how much…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 71AP: An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40...

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Directions 1. A car traveled at 380 minutes, how much does the car traveled in seconds? 2. The velocity of a train is 80.0 km/h, due west. One and a half hours later its velocity is 65.0 km/h, due west. What is the train’s average acceleration? 3. A car makes a trip due north for three-fourths of the time and due one-fourth of the time. The average northward velocity has a magnitude of 29 m/s, and the average southward velocity has a magnitude of 20 m/s. What is the average velocity (magnitude and direction) for the entire trip? 4. A honeybee leaves the hive and travels a total distance of 2 km before returning to the hive. What is the magnitude of the displacement vector of the bee? 5. A football game customarily begins with a coin toss to determine who kicks off. The referee tosses the coin up with an initial speed of 5.00 m/s. in the absence of air resistance, how high does the coin go above its point of release? 6. A meteoroid is speeding through the atmosphere, traveling east at 18.3 km/s while descending at a rate 11.5 km/s. What its speed, in km/s? 2. In diving to a depth of 800 m, an elephant seal also moves 560 m due east of his starting point. What is the magnitude of the player’s displacement? 7. A projectile is launched from an returns to ground level. Air resistance is absent. The horizontal range of the projectile is measured to be R= 175 m and the horizontal component of the launch velocity is vox= +25m/s. Find the vertical component voy of the launch velocity. 8. A volleyball is spiked so that it has an initial velocity 20 m/s directed downward at an angle 48 degrees below the horizontal. What is the horizontal component of the ball’s velocity when opposing player fields the ball? 9. An average chicken egg has a mass of 50 grams. You weigh a bag of eggs and find a mass of 1840 grams. a. What is the most likely number of eggs in the bag? b. Now you carefully count the eggs and find 39 eggs. What is the percent error of your predicted number of eggs?

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