University Physics Volume 1
18th Edition
ISBN: 9781938168277
Author: William Moebs, Samuel J. Ling, Jeff Sanny
Publisher: OpenStax - Rice University
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Chapter 3, Problem 54P
Unreasonable results At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of
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Chapter 3 Solutions
University Physics Volume 1
Ch. 3 - Check your Understanding A cyclist rides 3 km west...Ch. 3 - Check your Understanding The position of an object...Ch. 3 - Check Your Understanding Protons in a linear...Ch. 3 - Check Your Understanding An airplane lands on a...Ch. 3 - Check Your Understanding A manned rocket...Ch. 3 - Check Your Understanding A bicycle has a constant...Ch. 3 - Check Your Understanding A chunk of ice beaks off...Ch. 3 - Check Your Understanding A particle starts from...Ch. 3 - Position, Displacement, and Average Velocity Give...Ch. 3 - Under what circumstances does distance traveled...
Ch. 3 - Bacteria move back and forth using their flagella...Ch. 3 - Give an example of a device used to measure time...Ch. 3 - Does a car’s odometer measure distance traveled or...Ch. 3 - During a given time interval the average velocity...Ch. 3 - There is a distinction between average speed and...Ch. 3 - Does the speedometer of a car measure speed or...Ch. 3 - If you divide the total distance traveled on a car...Ch. 3 - How are instantaneous velocity and instantaneous...Ch. 3 - Is it possible for speed to be constant while...Ch. 3 - Is it possible for velocity to be constant while...Ch. 3 - Give an example in which velocity is zero yet...Ch. 3 - If a subway train is moving to the left (has a...Ch. 3 - Plus and minus signs are used in one-dimensional...Ch. 3 - Motion with Constant Acceleration When analyzing...Ch. 3 - State two scenarios of the kinematics of single...Ch. 3 - What is the acceleration of a rock thrown straight...Ch. 3 - An object that is thrown straight up falls back to...Ch. 3 - Suppose you throw a rock nearly straight up at a...Ch. 3 - The severity of a fall depends on your speed when...Ch. 3 - How many times higher could an astronaut jump on...Ch. 3 - Finding Velocity and Displacement from...Ch. 3 - Position, Displacement, and Average Velocity...Ch. 3 - A car is 2.0 km west of a traffic light at t=0 and...Ch. 3 - The Shanghai maglev train connects Longyang Road...Ch. 3 - The position of a particle moving along the x...Ch. 3 - A cyclist rides 8.0 km east for 20 minutes, then...Ch. 3 - On February 15, 2013, a superbolide meteor...Ch. 3 - A woodchuck runs 20 m to the right in 5 s, then...Ch. 3 - Sketch the velocity-versus-time graph from the...Ch. 3 - Sketch the velocity-versus-time graph from the...Ch. 3 - Given the following velocity-versus-time graph,...Ch. 3 - An object has a position function x(t)=5tm . (a)...Ch. 3 - A particle moves along the x -axis according to...Ch. 3 - Unreasonable results. A particle moves along the x...Ch. 3 - Average and Instantaneous Acceleration A cheetah...Ch. 3 - Dr. John Paul Stapp was U.S. Air Force officer who...Ch. 3 - Sketch the acceleration-versus-time graph from the...Ch. 3 - A commuter backs her car out of her garage with an...Ch. 3 - Assume an intercontinental ballistic goes from...Ch. 3 - An airplane, starting from rest, move down the...Ch. 3 - Motion with Constant Acceleration A particle moves...Ch. 3 - A particle moves in a straight line with an...Ch. 3 - A particle moves in a straight line with an...Ch. 3 - (a) Sketch a graph of velocity versus time...Ch. 3 - (a) Sketch a graph of acceleration versus time...Ch. 3 - A particle has a contant acceleration of 6.0m/s2 ....Ch. 3 - At t=10s , a particle is moving from left to right...Ch. 3 - A well-thrown ball is caught in a well-padded...Ch. 3 - A bullet in a gun is accelerated from the firing...Ch. 3 - (a) A light-rail commuter train accelerates at a...Ch. 3 - While entering a freeway, a car accelerates from...Ch. 3 - Unreasonable results At the end of a race, a...Ch. 3 - Blood is accelerated from rest to 30.0 cm/s in a...Ch. 3 - During a slap shot, a hockey player accelerates...Ch. 3 - A powerful motocycle can accelerate from rest to...Ch. 3 - Freight trains can product only relatively small...Ch. 3 - A fireworks shell is accelerated from rest to a...Ch. 3 - A swan on a lake gets airborne by flapping its...Ch. 3 - A woodpecker’s brain is specially protected from...Ch. 3 - An unwary football player collides with a padded...Ch. 3 - A care package is dropped out of a cargo plane and...Ch. 3 - An express train passes through a station. It...Ch. 3 - Unreasonable results Dragsters can actually reach...Ch. 3 - Calculate the displacement and velocity at times...Ch. 3 - Calculate the displacement and velocity at times...Ch. 3 - A basketball referee tosses the ball straight up...Ch. 3 - A rescue helicopter is hovering over a person...Ch. 3 - Unreasonable results A dolphin in an aquatic show...Ch. 3 - A diver bounces straight up from a diving board,...Ch. 3 - (a) Calculate the height of a cliff if it takes...Ch. 3 - A very strong, but inept, shot putter puts the...Ch. 3 - You throw a ball straight up with an initial...Ch. 3 - A kangaroo can jump over an object 2.50 m high....Ch. 3 - Standing at the base of one of the cliffs of Mt....Ch. 3 - There is a 25O-m-high cliff at Half Dome in...Ch. 3 - The acceleration of a particle varies with time...Ch. 3 - Between t=0 and t=t0 , a rocket moves straight...Ch. 3 - The velocity of a particle moving along the x...Ch. 3 - A particle at rest leaves the origin with its...Ch. 3 - Professional baseball player Nolan Ryan could...Ch. 3 - An airplane leaves Chicago and makes the 3000-km...Ch. 3 - Unreasonable Results A cyclist rides 16.0 km east,...Ch. 3 - An object has an acceleration of +1.2cm/s2 . At...Ch. 3 - A particle moves along the x -axis according to...Ch. 3 - A particle moving at constant acceleration has...Ch. 3 - A train is mowing up a steep grade at constant...Ch. 3 - An electron is moving in a straight line with a...Ch. 3 - An ambulance driver is rushing a patient to the...Ch. 3 - A motorcycle that is slowing down uniformly covers...Ch. 3 - A cyclist travels from point A to point B in 10...Ch. 3 - Two trains are moving at 30 m/s in opposite...Ch. 3 - A 10.0-m-long truck moving with a constant...Ch. 3 - A police car waits in hiding slightly off the...Ch. 3 - Pablo is running in a half marathon at a velocity...Ch. 3 - Unreasonable results A runner approaches the...Ch. 3 - An airplane accelerates at 5.0m/s2 for 30.0 s....Ch. 3 - Compare the distance traveled of an object that...Ch. 3 - An object is moving east with a constant velocity...Ch. 3 - A ball is thro straight up. It passes a...Ch. 3 - A coin is dropped from a hot-air balloon that is...Ch. 3 - A soft tennis ball is dropped onto a hard floor...Ch. 3 - Unreasonable results. A raindrop falls from a...Ch. 3 - Compare the time in the air of a basketball player...Ch. 3 - Suppose that a person takes 0.5 s to react and...Ch. 3 - A hot-air balloon rises from ground level at a...Ch. 3 - (a) A world record was se for the men’s 100-m dash...Ch. 3 - An object is dropped from a height of 75.0 m above...Ch. 3 - A steel ball is dropped onto a hard floor from a...Ch. 3 - An object is dropped from a roof of a building of...Ch. 3 - In a 100-rn race, the winner is timed at 11.2 s....Ch. 3 - The position of a particle moving along the x...Ch. 3 - A cyclist sprints at the end of a race to clinch a...Ch. 3 - In 1967, New Zealander Burt Munro set the world...
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- A number of electric charges has been placed at distinct points along a line with separations as indicated. Two charges share a common magnitude, q (lower case), and another charge has magnitude Q(upper case). The signs of the charges are indicated explicitly such that ∣∣+q∣∣∣∣+Q∣∣=∣∣−q∣∣==∣∣−Q∣∣=qQ Four different configurations of charges are shown. For each, express the net electric force on the charge with magnitude Q (upper case) as F⃗E=FE,xî where the positive x direction is towards the right. By repositioning the figures to the area on the right, rank the configurations from the most negative value to the most positive value of FE,x.arrow_forwardFor each part make sure to include sign to represent direction, with up being positive and down being negative. A ball is thrown vertically upward with a speed of 30.5 m/s. A) How high does it rise? y= B) How long does it take to reach its highest point? t= C) How long does it take the ball return to its starting point after it reaches its highest point? t= D) What is its velocity when it returns to the level from which it started? v=arrow_forwardFour point charges of equal magnitude Q = 55 nC are placed on the corners of a rectangle of sides D1 = 27 cm and D2 = 11cm. The charges on the left side of the rectangle are positive while the charges on the right side of the rectangle are negative. Use a coordinate system where the positive y-direction is up and the positive x-direction is to the right. A. Which of the following represents a free-body diagram for the charge on the lower left hand corner of the rectangle? B. Calculate the horizontal component of the net force, in newtons, on the charge which lies at the lower left corner of the rectangle.Numeric : A numeric value is expected and not an expression.Fx = __________________________________________NC. Calculate the vertical component of the net force, in newtons, on the charge which lies at the lower left corner of the rectangle.Numeric : A numeric value is expected and not an expression.Fy = __________________________________________ND. Calculate the magnitude of the…arrow_forward
- Point charges q1=50.0μC and q2=-35μC are placed d1=1.0m apart, as shown. A. A third charge, q3=25μC, is positioned somewhere along the line that passes through the first two charges, and the net force on q3 is zero. Which statement best describes the position of this third charge?1) Charge q3 is to the right of charge q2. 2) Charge q3 is between charges q1 and q2. 3) Charge q3 is to the left of charge q1. B. What is the distance, in meters, between charges q1 and q3? (Your response to the previous step may be used to simplify your solution.)Give numeric value.d2 = __________________________________________mC. Select option that correctly describes the change in the net force on charge q3 if the magnitude of its charge is increased.1) The magnitude of the net force on charge q3 would still be zero. 2) The effect depends upon the numeric value of charge q3. 3) The net force on charge q3 would be towards q2. 4) The net force on charge q3 would be towards q1. D. Select option that…arrow_forwardThe magnitude of the force between a pair of point charges is proportional to the product of the magnitudes of their charges and inversely proportional to the square of their separation distance. Four distinct charge-pair arrangements are presented. All charges are multiples of a common positive charge, q. All charge separations are multiples of a common length, L. Rank the four arrangements from smallest to greatest magnitude of the electric force.arrow_forwardA number of electric charges has been placed at distinct points along a line with separations as indicated. Two charges share a common magnitude, q (lower case), and another charge has magnitude Q (upper case). The signs of the charges are indicated explicitly such that ∣∣+q∣∣∣∣+Q∣∣=∣∣−q∣∣==∣∣−Q∣∣=qQ Four different configurations of charges are shown. For each, express the net electric force on the charge with magnitude Q (upper case) as F⃗E=FE,xî where the positive x direction is towards the right. By repositioning the figures to the area on the right, rank the configurations from the most negative value to the most positive value of FE,x.arrow_forward
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Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY