College Physics
10th Edition
ISBN: 9781285737027
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 5CQ
Two cars are moving in the same direction in parallel lanes along a highway. At some instant, the velocity of car A exceeds the velocity of car B. Does that mean that the acceleration of A is greater than that of B at that instant? Explain.
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Does acceleration depend on the speed of an object? Why or why not? Give an example of a slow object having a larger acceleration than a fast object. Can anyone think of an example of an object moving in such a way so that it is accelerating while having zero velocity?
A train makes a journey in which at a point on its trajectory a speed of 80.0 km / h is measured towards
the east, while half an hour later the speed is 65.0 km /h towards the east. Can you calculate the
average acceleration in this half hour of travel?
a) No, because we do not know the starting position or the final position of that half hour of travel.
b) No, because we do not know how the direction of the train changed in the other moments of
that half hour of travel.
c) Yes, and it has a magnitude of 30.0 km/h?? westward.
d) Yes, and it has a magnitude of 30.0 km / h²2? to the east.
You throw a baseball straight up in the air so that it rises to a maximum height much greater than your height. Is the magnitude of the ball’s acceleration greater while it is being thrown or after it leaves your hand? Explain.
Chapter 2 Solutions
College Physics
Ch. 2.2 - Figure 2.4 shows the unusual path of a confused...Ch. 2.3 - True or False? (a) A car must always have an...Ch. 2.3 - Parts (a), (b), and (c) of Figure 2.10 represent...Ch. 2.4 - The three graphs in Figure 2.13 represent the...Ch. 2.4 - Figure 2.14a is a diagram of a multiflash image of...Ch. 2.6 - A tennis player on serve tosses a ball straight...Ch. 2.6 - As the tennis ball of Quick Quiz 2.6 travels...Ch. 2.6 - A skydiver jumps out of a hovering helicopter. A...Ch. 2 - Math Review Solve the quadratic equation 2.00t2 6...Ch. 2 - Math Review Solve the following two equations for...
Ch. 2 - Math Review Solve the following two equations for...Ch. 2 - A football player runs from his own goal line to...Ch. 2 - A ball is thrown downward from the top of a 40.0 m...Ch. 2 - An arrow is shot straight up in the air at an...Ch. 2 - A red ball is dropped from rest at a height of...Ch. 2 - If the velocity of a particle is nonzero, can the...Ch. 2 - If the velocity of a particle is zero, can the...Ch. 2 - If a car is traveling eastward, can its...Ch. 2 - (a) Can the equations in Table 2.4 be used in a...Ch. 2 - Two cars are moving in the same direction in...Ch. 2 - Figure CQ2.6 shows strobe photographs taken of a...Ch. 2 - (a) Can the instantaneous velocity of an object at...Ch. 2 - A ball is thrown vertically upward. (a) What are...Ch. 2 - Consider the following combinations of signs and...Ch. 2 - A ball rolls in a straight line along the...Ch. 2 - An object moves along the x-axis, its position...Ch. 2 - A ball is thrown straight up in the air. For which...Ch. 2 - A juggler throws a bowling pin straight up in the...Ch. 2 - A racing car starts from rest and reaches a final...Ch. 2 - The speed of a nerve impulse in the human body is...Ch. 2 - Light travels at a speed of about 3 103 m/s. (a)...Ch. 2 - A person travels by car from one city to another...Ch. 2 - The current indoor world record time in the 200-m...Ch. 2 - Two boats start together and race across a...Ch. 2 - A graph of position versus time for a certain...Ch. 2 - A motorist drives for 35.0 minutes at 85.0 km/h...Ch. 2 - A tennis player moves in a straight-line path as...Ch. 2 - A jet plane has a takeoff speed of v0 = 75 m/s and...Ch. 2 - Two cars travel in the same direction along a...Ch. 2 - The cheetah can reach a top speed of 114 km/h (71...Ch. 2 - An athlete swims the length L of a pool in a time...Ch. 2 - A person lakes a trip, driving with a constant...Ch. 2 - A tortoise can run with a speed of 0.10 m/s, and a...Ch. 2 - To qualify for the finals in a racing event, a...Ch. 2 - Prob. 16PCh. 2 - A graph of position versus time for a certain...Ch. 2 - A race car moves such that, its position fits the...Ch. 2 - Runner A is initially 4.0 mi west of a flagpole...Ch. 2 - A particle starts from rest and accelerates as...Ch. 2 - A 50.0-g Super Ball traveling at 25.0 m/s bounces...Ch. 2 - The average person passes out at an acceleration...Ch. 2 - A certain car is capable of accelerating at a rate...Ch. 2 - The velocity vs. time graph for an object moving...Ch. 2 - A steam catapult launches a jet aircraft from the...Ch. 2 - PROBLEM A race car starting from rest accelerates...Ch. 2 - An object moving with uniform acceleration has a...Ch. 2 - In 1865 Jules Verne proposed sending men to the...Ch. 2 - A truck covers 40.0 m in 8.50 s while uniformly...Ch. 2 - A speedboat increases its speed uniformly from vi...Ch. 2 - A Cessna aircraft has a liftoff speed of 120....Ch. 2 - An object moves with constant acceleration 4.00...Ch. 2 - In a test run, a certain car accelerates uniformly...Ch. 2 - A jet plane lands with a speed of 100 m/s and can...Ch. 2 - Speedy Sue, driving at 30.0 m/s, enters a one-lane...Ch. 2 - A record of travel along a straight path is as...Ch. 2 - A train is traveling down a straight track at 20...Ch. 2 - A car accelerates uniformly from rest to a speed...Ch. 2 - A car starts from rest and travels for 5.0 s with...Ch. 2 - A car starts from rest and travels for t1 seconds...Ch. 2 - In the Daytona 500 auto race, a Ford Thunderbird...Ch. 2 - A certain cable car in San Francisco can stop in...Ch. 2 - A hockey player is standing on his skates on a...Ch. 2 - A train 4.00 102 m long is moving on a straight...Ch. 2 - A ball is thrown vertically upward with a speed of...Ch. 2 - A ball is thrown directly downward with an initial...Ch. 2 - A certain freely falling object, released from...Ch. 2 - An attacker at the base of a castle wall 3.65 m...Ch. 2 - Traumatic brain injury such as concussion results...Ch. 2 - A small mailbag is released from a helicopter that...Ch. 2 - A tennis player tosses a tennis ball straight up...Ch. 2 - A package is dropped from a helicopter that is...Ch. 2 - A model rocket is launched straight upward with an...Ch. 2 - A baseball is hit so that it travels straight...Ch. 2 - A truck tractor pulls two trailers, one behind the...Ch. 2 - Colonel John P. Stapp, USAF, participated in...Ch. 2 - A bullet is fired through a board 10.0 cm thick in...Ch. 2 - A speedboat moving at 30.0 m/s approaches a...Ch. 2 - A student throws a set of keys vertically upward...Ch. 2 - A student throws a set of keys vertically upward...Ch. 2 - An insect called the froghopper (Philaenus...Ch. 2 - Prob. 62APCh. 2 - A ball is thrown upward from the ground with an...Ch. 2 - To pass a physical education class at a...Ch. 2 - In Chapter 5 we will define the center of mass of...Ch. 2 - Two students air on a balcony a distance h above...Ch. 2 - You drop a ball from a window on an upper floor of...Ch. 2 - The driver of a truck slams on the brakes when he...Ch. 2 - Emily challenges her husband, David, to catch a 1...Ch. 2 - A mountain climber stands at the top of a 50.0-m...Ch. 2 - An ice sled powered by a rocket engine sum from...Ch. 2 - In Bosnia, the ultimate test of a young nuns...Ch. 2 - Prob. 73APCh. 2 - A glider on an air track carries a flag of length ...Ch. 2 - A stuntman sitting on a tree limb wishes to drop...
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