College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 3, Problem 6CQ
Determine which of the following moving objects obey the equations of projectile motion developed in this topic. (a) A ball is thrown in an arbitrary direction. (b) A jet airplane crosses the sky with its engines thrusting the plane forward. (c) A rocket leaves the launch pad. (d) A rocket moves through the sky after its engines have failed. (e) A stone is thrown under water.
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Which of the following statements are true of the time of flight for a projectile? List all that apply.
The time that a projectile is in the air is dependent upon the horizontal component of the initial velocity.
The time that a projectile is in the air is dependent upon the vertical component of the initial velocity.
For a projectile which lands at the same height that it is projected from, the time to rise to the peak is equal to the time to fall from its peak to the original height.
For the same upward launch angles, projectiles will stay in the air longer if the initial velocity is increased.
Assume that a kicked ball in football is a projectile. If the ball takes 3 seconds to rise to the peak of its trajectory, then it will take 6 seconds to fall from the peak of its trajectory to the ground.
For general projectile motion, which of the following best describes the horizontal component of a projectile's velocity? Assume air resistance is negligible.
1) The horizontal component of a projectile's velocity continually decreases.
2) The horizontal component of a projectile's velocity continually increases.
3) The horizontal component of a projectile's velocity remains a nonzero constant.
4) The horizontal component of a projectile's velocity initially decreases and then increases.
5) The horizontal component of a projectile's velocity is zero.
Which among the following statements is CORRECT?
A.) The vertical component of the acceleration of a projectile is zero during the entire flight.
B.)The vertical component of the velocity of a projectile remains contant during the entire flight.
C.)The horizontal component of the velocity of a projectile remains contant during the entire flight.
D.)The maximum height reached by a projectile does not depend on its initial speed.
Chapter 3 Solutions
College Physics
Ch. 3.1 - Which of the following objects cant be...Ch. 3.1 - Consider the following controls in an automobile:...Ch. 3.1 - A girl on a bicycle takes 15.0 s to ride half way...Ch. 3.1 - Suppose you are carrying a ball and running at...Ch. 3.1 - As a projectile moves in its parabolic path, where...Ch. 3 - As a projectile moves in its path, is there any...Ch. 3 - Construct motion diagrams showing the velocity and...Ch. 3 - Explain whether the following particles do or do...Ch. 3 - A ball is projected horizontally from the top of a...Ch. 3 - A projectile is launched with speed v0 at an angle...
Ch. 3 - Determine which of the following moving objects...Ch. 3 - Two projectiles are thrown with the same initial...Ch. 3 - A ball is thrown upward in the air by a passenger...Ch. 3 - A projectile is launched at some angle to the...Ch. 3 - A baseball is thrown from the outfield toward the...Ch. 3 - A student throws a heavy red ball horizontally...Ch. 3 - A boat is heading due east at speed v when...Ch. 3 - As an apple tree is transported by a truck moving...Ch. 3 - An airplane in a holding pattern flies at constant...Ch. 3 - A hiker walks 2.00 km north and then 3.00 km east,...Ch. 3 - A miniature quadcopter is located at xi = 2.00 m...Ch. 3 - An ant crawls on the floor along the curved path...Ch. 3 - Explain whether the following particles do or do...Ch. 3 - A rabbit is moving in the positive x-direction at...Ch. 3 - A student stands at the edge of a cliff and throws...Ch. 3 - One of the fastest recorded pitches in major...Ch. 3 - The best leaper in the animal kingdom is the puma,...Ch. 3 - A rock is thrown upward from the level ground in...Ch. 3 - A placekicker must kick a football from a point...Ch. 3 - The record distance in the sport of throwing...Ch. 3 - A brick is thrown upward from the top of a...Ch. 3 - From the window of a building, a ball is tossed...Ch. 3 - A car is parked on a cliff overlooking the ocean...Ch. 3 - An artillery shell is fired with an initial...Ch. 3 - A projectile is launched with an initial speed of...Ch. 3 - A fireman d = 50.0 m away from a burning building...Ch. 3 - A playground is on the flat roof of a city school,...Ch. 3 - A cruise ship sails due north at 4.50 m/s while a...Ch. 3 - Suppose a boat moves at 12.0 m/s relative to the...Ch. 3 - A car travels due east with a speed of 50.0 km/h....Ch. 3 - A jet airliner moving initially at 3.00 102 mi/h...Ch. 3 - A Coast Guard cutter detects an unidentified ship...Ch. 3 - A bolt drops from the ceiling of a moving train...Ch. 3 - An airplane maintains a speed of 630 km/h relative...Ch. 3 - Suppose a chinook salmon needs to jump a waterfall...Ch. 3 - An airplane maintains a speed of 630 km/h relative...Ch. 3 - A river has a steady speed of 0.500 m/s. A student...Ch. 3 - This is a symbolic version of Problem 29. A river...Ch. 3 - How long does it take ail automobile traveling in...Ch. 3 - A moving walkway at an airport has a speed v1 and...Ch. 3 - A boy throws a baseball onto a roof and it rolls...Ch. 3 - You can use any coordinate system you like to...Ch. 3 - Towns A and B in Figure P3.35 are 80.0 km apart. A...Ch. 3 - In a local diner, a customer slides an empty...Ch. 3 - A father demonstrates projectile motion to his...Ch. 3 - Two canoeists in identical canoes exert the same...Ch. 3 - A rocket is launched at an angle of 53.0 above the...Ch. 3 - A farm truck travels due east with a constant...Ch. 3 - (a) If a person can jump a maximum horizontal...Ch. 3 - A ball is thrown straight upward and returns to...Ch. 3 - A home run is hit in such a way that the baseball...Ch. 3 - A 2.00-m-tall basketball player is standing on the...Ch. 3 - A quarterback throws a football toward a receiver...Ch. 3 - The x- and y-coordinates of a projectile launched...Ch. 3 - Spitting cobras can defend themselves by squeezing...Ch. 3 - When baseball outfielders throw the ball, they...Ch. 3 - A hunter wishes to cross a river that is 1.5 km...Ch. 3 - Chinook salmon are able to move upstream faster by...Ch. 3 - A daredevil is shot out of a cannon at 45.0 to the...Ch. 3 - If raindrops are falling vertically at 7.50 m/s,...Ch. 3 - A celebrated Mark Twain story has motivated...Ch. 3 - A landscape architect is planning an artificial...Ch. 3 - A golf ball with an initial speed of 50.0 m/s...Ch. 3 - Antlion larvae lie in wait for prey at the bottom...Ch. 3 - One strategy in a snowball fight is to throw a...Ch. 3 - A football receiver running straight downfield at...Ch. 3 - The determined Wile E. Coyote is out once more to...
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- As a projectile moves in its path, is there any point along the path where the velocity and acceleration vectors are parallel to each other? ( assume the object is thrown upward and forward, but not straight up.)arrow_forwardThe record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Assuming the initial launch angle was 45° and neglecting air resistance, determine the following: (a) the initial speed of the projectile and (b) the total time the projectile was in flight.arrow_forwardUsing the conventional choice for positive and negative axes described in the text, what is the y-component of the acceleration of an object experiencing projectile motion?arrow_forward
- Do people engaging in 'PARKOUR' experience projectile motion? Why or why not? Please explain your answer. thank you!arrow_forwardA baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point, which statement is true? (a) Its velocity and its acceleration are both zero. (b) Its velocity is not zero, but its acceleration is zero. (c) Its velocity is perpendicular to its acceleration. (d) Its acceleration depends on the angle at which the ball was thrown. (e) None of statements (a) through (d) is true.arrow_forwardA projectile is launched on the Earth with a certain initial velocity and moves without air resistance. Another projectile is launched with the same initial velocity on the Moon, where the acceleration due to gravity is one-sixth as large. How does the range of the projectile on the Moon compare with that of the projectile on the Earth? (a) It is one-sixth as large. (b) It is the same. (c) It is 6 times larger. (d) It is 6 times larger. (e) It is 36 times larger.arrow_forward
- In which of the following situations is the moving object appropriately modeled as a projectile? Choose all correct answers. (a) A shoe is tossed in an arbitrary direction. (b) A jet airplane crosses the sky with its engines thrusting the plane forward. (c) A rocket leaves the launch pad. (d) A rocket moves through the sky, at much less than the speed of sound, after its fuel has been used up. (e) A diver throws a stone under water.arrow_forwardGive an example of a trajectory in two or three dimensions caused by independent perpendicular motions.arrow_forwardAn athlete has an intuitive knowledge, gained by experience, of the changing nature of a ball in flight. If the athlete ignores the effects of air, the x-component of the velocity changes by the same amount each second. True or False?arrow_forward
- Can kinematic equations be used to describe the motion of a projectile? If so, which equations?arrow_forwardWhich of the following statements about projectile motion ARE correct? 1. The direction of both velocity and acceleration are changing across the motion trajectory 2. For a free fall object(the horizontal component of the initial velocity is zero), its velocity is zero when it reaches maximum height, but its acceleration is not zero at the same time. 3. The velocity direction is changing across the motion trajectory, but the acceleration direction remains the same. 4. For a free fall object(the horizontal component of the initial velocity is zero), both its velocity and acceleration are zero when it reaches maximum height.arrow_forwardSelect all statements about projectile motion that are true. (ignoring the effects of air resistance...) The magnitude of the x-component of a projectile's acceleration is 9.8 m/s2. The x-component of a projectile's acceleration is zero. The y-component of a projectile's acceleration is zero. The magnitude of a projectile's acceleration is 9.8 m/s2. The magnitude of a projectile's acceleration is zero. The magnitude of the y-component of a projectile's acceleration is 9.8 m/s2.arrow_forward
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